Manava Dharmashastra 2.146

2.146

utpādakabrahmadātror garīyān brahmadaḥ pitā
brahmajanma hi viprasya pretya ceha ca śāśvatam //

Of him who gives natural birth and him who gives (the knowledge of) the Veda, the giver of the Veda is the more venerable father; for the birth for the sake of the Veda (ensures) eternal (rewards) both in this (life) and after death.