SB 12.10.37
jñanam trai-kalikam brahman
vijñanam ca viraktimat
brahma-varcasvino bhuyat
puranacaryatastu te
Translation:
O brahmana, may you have perfect knowledge of past, present and future, along with transcendental realization of the Supreme, enriched by renunciation. You have the brilliance of an ideal brahmana, and thus may you achieve the post of spiritual master of the Puranas.