Ādi 7.117

As already explained, there are three prasthanas on the path of advancement in spiritual knowledge-namely, nyaya-prasthana (Vedanta philosophy), sruti-prasthana (the Upanisads and Vedic mantras) and smrti-prasthana (the Bhagavad-gita, Mahabharata, Puranas, etc.). Unfortunately, Mayavadi philosophers do not accept the smrti-prasthana. Smrti refers to the conclusions drawn from the Vedic evidence. Sometimes Mayavadi philosophers do not accept the authority of Bhagavad-gita and the Puranas, and this is called ardha-kukkuti-nyaya. If one believes in the Vedic literatures, one must accept all the Vedic literatures recognized by the great acaryas, but these Mayavadi philosophers accept only the nyaya-prasthana and sruti-prasthana, rejecting the smrti-prasthana. Here, however, Sri Caitanya Mahaprabhu cites evidence from the Gita, Visnu Purana, etc., which are smrti-prasthana. No one can avoid the Personality of Godhead in the statements of Bhagavad-gita and other Vedic literatures such as the Mahabharata and the Puranas. Lord Caitanya therefore quotes a passage from Bhagavad-gita (7.5).