Ramanuja's guru was Yādava Prakāśa, a scholar who was a part of the more ancient Advaita Vedānta monastic tradition. Sri Vaishnava tradition holds that Ramanuja disagreed with his guru and the non-dualistic Advaita Vedānta, and instead followed in the footsteps of Tamil Alvārs tradition, the scholars Nāthamuni and Yamunāchārya. Ramanuja is famous as the chief proponent of Vishishtadvaita subschool of Vedānta, and his disciples were likely authors of texts such as the Shatyayaniya Upanishad. Ramanuja himself wrote influential texts, such as bhāsya on the "Brahma Sutras" and the "Bhagavad Gita", all in Sanskrit.