Within the collection of 21 Yashts, the Tishtar Yasht is the eight hymn. According to the Zoroastrian tradition, its text is divided into 16 sections called Kardas. To better reference specific verses, modern scholarship divides the Yashts into stanzas, and within this scheme, the Tishtar consists of 61 stanzas. Together with Yasht 10, 11, 12, 13 and 14, it is classified as a Hymnic Yasht. This means that its content focusses on the properties and actions of the divinity, which are perceived as ongoing. Like the other Yashts, the Tishtar Yasht has a special day dedicated in the Zoroastrian calendar, namely the thirteenth day.
Like all Yashts, the Tishtar Yasht begins with an introductory verse (Stanza 0) in Pazend, which announces the Yazata to be worshiped and, when performed, the time of the day. It also closes with the common formula found in other Yashts, containing the Yenghe hatam and Ashem Vohu manthras.
Excluding the introductory and closing formulas, the text of the Yasht itself can be divided into three parts. The first part is formed by Kardas 1-5 (stanzas 1-9). It serves to introduce the myth related in the hymn. Here, Tishtrya is connected to the arrow shot by the legendary Iranian archer Erekhsha from mount Airyokhshaotha to Mount Khvanvant.
The second part is formed by Karda 6 (stanzas 10-34). It describes the myth of how Tishtrya fights with Apaosha, the demon of drought. The fight initially goes in favor of Apaosha until Tishtrya is finally provided with proper worship, thus, receiving the strength to overcome his adversary. This victory causes the rain to fall again, a feat which shows similarities with the Vedic story of Indra's fight against Vritra. The connection of Tishtrya with Sirius, the end of July and the onset of rainfall has been linked to the Dog days in an attempt to infer the original location, where the myth was composed. There is, however, no consensus on the topic.
The third part is formed by Kardas 7-16 (stanzas 35-61) and can be further subdivided into two parts. Kardas 7-15 are devoted to the praise of Tishtrya, whereas Karda 16 describes how the sacrifice to Tishtrya is to be performed. The hymn closes with Ahura Mazda reminding the Iranians of the calamities that might befall them if the worship was to be performed improperly.
Lommel 1927, p. 46. - Lommel, Herman (1927). Die Yäšt's des Awesta. Quellen der Religionsgeschichte: Iran. Vol. 15. Vandenhoeck & Ruprecht.
Darmesteter 1883, p. 92. - Darmesteter, James (1883). Müller, Max (ed.). Zend-Avesta II: The Sirozahs, Yasts and Nyayis. Sacred Books of the East. Vol. 23. Dehli: Motilal Banarsidass Publishers. https://archive.org/details/mlbd.zendavestasacred0000vol-23.unse_e5w9/page/90/mode/2up
Panaino 2005, "TIŠTRYA (Pahl. Tištar, NPers. Teštar), an important Old Iranian astral divine being (yazata-), to whom the eighth hymn (Tištar Yašt) of the Later Avestan corpus was dedicated". - Panaino, Antonio (2005). "TIŠTRYA". Encyclopædia Iranica. New York: Routledge and Kegan Paul. https://www.iranicaonline.org/articles/tistrya-2/
Panaino 2005, p. 17: "The eigth Yasht is divided into sixteen karde-s (chapters) comprising a total of 61 paragraphs or stanzas". - Panaino, Antonio (2005). "TIŠTRYA". Encyclopædia Iranica. New York: Routledge and Kegan Paul. https://www.iranicaonline.org/articles/tistrya-2/
Hintze 2014, "The second, ‛hymnic’ group comprises the six hymns Yt. 8 [..], 10 [..], 11 [..], 12 [..], 13 [..] and 14". - Hintze, Almut (2014). "YAŠTS". Encyclopædia Iranica. New York: Routledge and Kegan Paul. https://iranicaonline.org/articles/yashts
Hintze 2014, "[T]he 'hymnic' Yašts predominantly describe features and functions of the deity praised in each hymn". - Hintze, Almut (2014). "YAŠTS". Encyclopædia Iranica. New York: Routledge and Kegan Paul. https://iranicaonline.org/articles/yashts
Lommel 1927, p. 5. - Lommel, Herman (1927). Die Yäšt's des Awesta. Quellen der Religionsgeschichte: Iran. Vol. 15. Vandenhoeck & Ruprecht.
MacKenzie 1971, p. 83: "Tištar [...] astr. Sirius". - MacKenzie, David N. (1971). A concise Pahlavi dictionary. London, New York, Toronto: Oxford University Press. https://archive.org/details/a-concise-pahlavi-dictionary/page/86/mode/2up
Panaino 2005, "It is also very probable that Vedic Tiṣya (RV V.54.13; X.64.8) corresponds to Av. Tištrya". - Panaino, Antonio (2005). "TIŠTRYA". Encyclopædia Iranica. New York: Routledge and Kegan Paul. https://www.iranicaonline.org/articles/tistrya-2/
Forssman 1968, p. 53: "Somit ist mit gewisser Wahrscheinlichkeit ein indo-iranischer Gestirnname *tištriia ermittelt". - Forssman, Bernhard (1968). "Apaoša, der Gegner des Tištriia". Zeitschrift für vergleichende Sprachforschung. 82 (1): 37–61. https://www.jstor.org/stable/40848215
Forssman 1968, p. 53: "Am nächsten liegt [...] zum Dreigestirn Gehörige". - Forssman, Bernhard (1968). "Apaoša, der Gegner des Tištriia". Zeitschrift für vergleichende Sprachforschung. 82 (1): 37–61. https://www.jstor.org/stable/40848215
Darmesteter 1883, p. 92. - Darmesteter, James (1883). Müller, Max (ed.). Zend-Avesta II: The Sirozahs, Yasts and Nyayis. Sacred Books of the East. Vol. 23. Dehli: Motilal Banarsidass Publishers. https://archive.org/details/mlbd.zendavestasacred0000vol-23.unse_e5w9/page/90/mode/2up
Nyberg 1974, p. 192: "Tir [tyl] the name of the planet Mercury". - Nyberg, Henrik S. (1974). A Manual of Pahlavi II - Ideograms, Glossary, Abbreviations, Index, Grammatical Survey, Corrigenda to Part I. Wiesbaden: Otto Harrassowitz. ISBN 3447-01580-2. https://archive.org/details/a-manual-of-pahlavi-1-henrik-samuel-nyberg/A%20MANUAL%20OF%20PAHLAVI%202%20-%20HENRIK%20SAMUEL%20NYBERG/page/11/mode/2up
Forssman 1968, p. 37: "Daneben Tir-Yast, infolge der mittelpers. Identifikation Tistar = Tir". - Forssman, Bernhard (1968). "Apaoša, der Gegner des Tištriia". Zeitschrift für vergleichende Sprachforschung. 82 (1): 37–61. https://www.jstor.org/stable/40848215
Forssman 1968, p. 53: "[D]afür spricht zum Beispiel die Tatsache, daß derselbe Monat den Namen des einen wie des anderen tragen konnte". - Forssman, Bernhard (1968). "Apaoša, der Gegner des Tištriia". Zeitschrift für vergleichende Sprachforschung. 82 (1): 37–61. https://www.jstor.org/stable/40848215
Panaino 1995, Chapter V: Tištrya and Tir. - Panaino, Antonio (1995). Tištrya. Part II: The Iranian Myth of the Star Sirius. Serie orientale Roma. Vol. LXVIII-2. Roma: Istituto italiano per il Medio ed Estremo Oriente. https://www.academia.edu/8581156/Ti%C5%A1trya_Part_II_The_Iranian_Myth_of_the_Star_Sirius_SOR_LXVIII_2_Roma_1995_XVI_150_pp
Hintze 2014, "All Yašts share the similar introductory (stanza 0) [..] in Pāzand[.] The appropriate formula from the Gāhs depends on the time of the day at which the hymn is recited". - Hintze, Almut (2014). "YAŠTS". Encyclopædia Iranica. New York: Routledge and Kegan Paul. https://iranicaonline.org/articles/yashts
Lommel 1927, pp. 8-12. - Lommel, Herman (1927). Die Yäšt's des Awesta. Quellen der Religionsgeschichte: Iran. Vol. 15. Vandenhoeck & Ruprecht.
Panaino 2005, p. 20: "This brief outline shows the three main parts the structure falls into". - Panaino, Antonio (2005). "TIŠTRYA". Encyclopædia Iranica. New York: Routledge and Kegan Paul. https://www.iranicaonline.org/articles/tistrya-2/
Panaino 2005, p. 20: "[T]he first part (karde-s 1-5, sts 1-9) serves as an introduction to the myth". - Panaino, Antonio (2005). "TIŠTRYA". Encyclopædia Iranica. New York: Routledge and Kegan Paul. https://www.iranicaonline.org/articles/tistrya-2/
Tafażżolī & Hanaway 1986, "The Avesta (Yašt 8.6) refers to what was apparently a familiar episode in the epic tradition: Ǝrəxša “of the swift arrow, having the swiftest arrow among the Aryans” shot an arrow from Mount Airyō.xšaoθa to Mount Xᵛanvant". - Tafażżolī, A.; Hanaway, W. L. (1986). "ĀRAŠ". Encyclopædia Iranica. Vol. II. New York: Routledge and Kegan Paul. pp. 266–267. https://www.iranicaonline.org/articles/aras-avestan-erexsa/
Panaino 2005, p. 20: "[T]he second part (karde 6, sts 10-34) relates to the myth itself". - Panaino, Antonio (2005). "TIŠTRYA". Encyclopædia Iranica. New York: Routledge and Kegan Paul. https://www.iranicaonline.org/articles/tistrya-2/
Panaino 2005, "Tištrya is the Iranian protagonist of the myth of the liberation of the waters, which, at least to a certain extent, could be structurally and functionally compared with that of Vedic Indra". - Panaino, Antonio (2005). "TIŠTRYA". Encyclopædia Iranica. New York: Routledge and Kegan Paul. https://www.iranicaonline.org/articles/tistrya-2/
Lommel 1927, p. 47. - Lommel, Herman (1927). Die Yäšt's des Awesta. Quellen der Religionsgeschichte: Iran. Vol. 15. Vandenhoeck & Ruprecht.
Panaino 2005, p. 20: "[T]he third part (karde-s 7-16, sts 35-61) [...] and falls into two subdivisions". - Panaino, Antonio (2005). "TIŠTRYA". Encyclopædia Iranica. New York: Routledge and Kegan Paul. https://www.iranicaonline.org/articles/tistrya-2/
Panaino 2005, p. 20: "karde-s 7-15: strictly evocative and eulogistic". - Panaino, Antonio (2005). "TIŠTRYA". Encyclopædia Iranica. New York: Routledge and Kegan Paul. https://www.iranicaonline.org/articles/tistrya-2/
Panaino 2005, p. 20: "karde 16: liturgical, containing the regulation for sacrifice degreed by Ahura Mazda". - Panaino, Antonio (2005). "TIŠTRYA". Encyclopædia Iranica. New York: Routledge and Kegan Paul. https://www.iranicaonline.org/articles/tistrya-2/
Panaino 1990, p. 20. - Panaino, Antonio (1990). Tištrya. Part I: The Avestan hymn to Sirius. Serie orientale Roma. Vol. LXVIII-1. Roma: Istituto italiano per il Medio ed Estremo Oriente. https://www.academia.edu/35233576/Tishtrya_Part_I_The_Avestan_Hymn_to_Sirius
Porro 2024, p. 8. - Porro, Jaime Martínez (2024). "Tracing Back the Sources of the Yašt in Manuscript F1". ¿Habló Zaraϑuštra? - Homenaje a Jean Kellens en su 80º aniversario. Girona: Sociedad de Estudios Iranios y Turanios. ISSN 2386-7833. https://www.academia.edu/118796451/Tracing_Back_the_Sources_of_the_Ya%C5%A1t_in_Manuscript_F1?email_work_card=title
König 2017, p. 21. - König, Götz (2017). "Bayān Yasn: State of the Art". Iran and the Caucasus 2. 21: 13–38. doi:10.1163/1573384x-90000003. https://doi.org/10.1163%2F1573384x-90000003
Porro 191, p. 205: "The manuscript F1, ms. 6550 [...] was completed [...] by Āsdīn Kākā Dhanpāl Laxmīdar Homajiār Rāmyār in Navsari, [on] January 1591 AD". sfn error: no target: CITEREFPorro191 (help)
Porro 2024, p. 205: "Analyzing the whole data, it appears that, at least the Yašts 8, [etc.] collect a huge number of orthographic variants, that can be traced back to Rōstām Mihrābān, i.e. an Iranian source of the 13 th century". - Porro, Jaime Martínez (2024). "Tracing Back the Sources of the Yašt in Manuscript F1". ¿Habló Zaraϑuštra? - Homenaje a Jean Kellens en su 80º aniversario. Girona: Sociedad de Estudios Iranios y Turanios. ISSN 2386-7833. https://www.academia.edu/118796451/Tracing_Back_the_Sources_of_the_Ya%C5%A1t_in_Manuscript_F1?email_work_card=title
Westergaard 1852. - Westergaard, Niels L. (1852). Zendavesta: or The religious books of the Zoroastrians. Berling brothers.
Geldner 1889, pp. 105-118. - Geldner, Karl F. (1889). Avesta. The Sacred Books of the Parsis II: Vispered and Khorda Avesta. Stuttgart: Kohlhammer. https://archive.org/details/in.ernet.dli.2015.217560/mode/2up
Darmesteter 1883, pp. 92-109. - Darmesteter, James (1883). Müller, Max (ed.). Zend-Avesta II: The Sirozahs, Yasts and Nyayis. Sacred Books of the East. Vol. 23. Dehli: Motilal Banarsidass Publishers. https://archive.org/details/mlbd.zendavestasacred0000vol-23.unse_e5w9/page/90/mode/2up
Darmesteter 1892, pp. 411-430. - Darmesteter, James (1892). Le Zend-Avesta, Vol. 2: Traduction Nouvelle Avec Commentaire Historique Et Philologique; La Loi (Vendidad); L'Épopée (Yashts); Le Livre de Prière (Khorda Avesta). Paris: E. Leroux. https://archive.org/details/lezendavestatrad02darm/page/410/mode/2up
Lommel 1927, pp. 46-57. - Lommel, Herman (1927). Die Yäšt's des Awesta. Quellen der Religionsgeschichte: Iran. Vol. 15. Vandenhoeck & Ruprecht.
Malandra 1983, pp. 140-149. - Malandra, William W. (1983). An Introduction to Ancient Iranian Religion: Readings from the Avesta and the Achaemenid Inscriptions. University of Minnesota Press. ISBN 978-0816611157. https://www.jstor.org/stable/10.5749/j.ctttsv8v
Panaino 1990. - Panaino, Antonio (1990). Tištrya. Part I: The Avestan hymn to Sirius. Serie orientale Roma. Vol. LXVIII-1. Roma: Istituto italiano per il Medio ed Estremo Oriente. https://www.academia.edu/35233576/Tishtrya_Part_I_The_Avestan_Hymn_to_Sirius