The Pahlavas are a people mentioned in ancient Indian texts. According to Patrick Carnegy, a Raj-era ethnographer, the 4th-century BCE Vartika of Katyayana mentions the Sakah-Parthavah, demonstrating an awareness of these Saka-Parthians, probably by way of commerce. Knowledge of the Pahlavas is distilled from the literary references in texts like the Manu Smriti, various Puranas, the Ramayana, the Mahabharata, and the Bṛhat Saṃhitā.