In ISKCON we say our main book is the Bhagavad-gita, but I’ve heard that the Bhagavad-gita is smrti (remembered) and the Vedas are sruti (heard). So my question is: is the Bhagavad-gita sruti or smrti?
Vedic culture has always recognized the Bhagavad-gita as a work that transcends its genre. Therefore, all acharyas include it as one of the three most authoritative sources of Vedanta knowledge:
Krishna Himself states that the Gita is the highest knowledge, and Krishna is the highest authority.