SB 12.10.37

jñānaṁ trai-kālikaṁ brahman
 vijñānaṁ ca viraktimat
brahma-varcasvino bhūyāt
 purāṇācāryatāstu te
Synonyms: 
jñānam — knowledge; trai-kālikam — of all three phases of time (past, present and future); brahman — O brāhmaṇa; vijñānam — transcendental realization; ca — also; virakti-mat — including renunciation; brahma-varcasvinaḥ — of him who is endowed with brahminical potency; bhūyāt — let there be; purāṇa-ācāryatā — the status of being a teacher of the Purāṇas; astu — may there be; te — of you.
Translation: 
O brāhmaṇa, 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 brāhmaṇa, and thus may you achieve the post of spiritual master of the Purāṇas.