SB 12.12.4
atra brahma param guhyam
jagatah prabhavapyayam
jñanam ca tad-upakhyanam
proktam vijñana-samyutam
Translation:
This literature describes the mystery of the Supreme Absolute Truth, the source of the creation and annihilation of this universe. Also presented are divine knowledge of Him together with the process of its cultivation, and the transcendental realization one achieves.