Aśauca-vidhi (Rules of Impurity) within Śrāddha-kalpa — Chapter on Testing/Selecting Brahmanas and Honoring the Atithi
तावदश्नन्ति पितरो यावदश्नन्ति वाग्यताः / दत्तं प्रतिग्रहो होमो भोजनं बलिरेव च
tāvadaśnanti pitaro yāvadaśnanti vāgyatāḥ / dattaṃ pratigraho homo bhojanaṃ balireva ca
祖灵(Pitṛ)受食之久,等同于守语之人(婆罗门)进食之久;布施、受施、火供(homa)、供食与祭献(bali)皆属施祖仪(śrāddha)。