Patañjali (fl. 150 BC or 2nd century BC) lived in the 2nd century. He was an Indian. He wrote the first grammar of Sanskrit language. He also wrote books about yoga. He is also the author of the Mahabhyasa, a commentary on Katyayana's varttikas on Panini's Astadhyayi as well as an unspecified work of medicine (Ayurveda).
- Jonardon Ganeri, Artha: Meaning, Oxford University Press 2006, 1.2, p. 12
- S. Radhakrishnan, and C.A. Moore, (1957). A Source Book in Indian Philosophy. Princeton, New Jersey: Princeton University, ch. XIII, Yoga, p. 453
- Gavin A. Flood, 1996