 The "Ashvalayana Grihya Sutra" mentions him as "Mahabharatacharya".He is also mentioned in the "Taittiriya Aranayaka" and the "Ashtadhyayi" of Pāṇini.He was a pupil of Vyasa, from whom he learned the "Jaya", the original 8,800 verses of the "Mahabharata".