What are Vaishnava scriptures?
Vaishnavas consider the triad of the Vedas and Upanishads, the Bhagavad Gita, and the Brahma-Suutra, which are traditionally referred to as the prasthaana-traya, as authoritative scripture. These canonical scriptures have been commented upon by the leading Aachaaryas of each Vaishnava school. Besides these texts, Vaishnavas also consider the Mahaabhaarata (of which the Bhagavad Gita is a part), the Bhaagavata-PuraaNa, etc., as scripture, but the relative values placed upon them by the various sampradaayas are not exactly the same.