prasthana-traya

The threefold foundation Vedanta is unusual among the schools in resting on three root texts rather than one, together called the prasthana-traya , the three points of departure.

He wrote commentaries, bhashyas , on the three foundations of Vedanta, the prasthana-traya : the principal Upanishads, the Brahma Sutra , and the Bhagavad Gita.

Those two, together with the Brahma Sutras , make up the prasthana-traya , the threefold foundation that every school of Vedanta sets out to interpret.

At its foundation stand his commentaries on the three canonical bases of Vedanta, the prasthana-traya .