Manava Dharmashastra 5.252

Manvarthamuktāvalī 5.252

anujñānantaraṃ brāhmaṇāḥ śrāddhakartāraṃ svadhāstu iti brūyuḥ| yasmātsarveṣu śrāddhatarpaṇādipitṛkarmasu svadhāśabdoccāraṇaṃ prakṛṣṭā āśīḥ |