Atharvaveda 8.10.23

8.10.23

sód akrāmat sā́ pitr̥̄́n ā́gachat tā́ṃ pitára úpāhvayanta svádha éhī́ti |
tásyā yamó rā́jā vatsá ā́sīd rajatapātráṃ pā́tram |
tā́m ántako mārtyavó 'dhok tā́ṃ svadhā́m evā́dhok |
tā́ṃ svadhā́ṃ pitára úpa jīvanty upajīvanī́yo bhavati yá eváṃ véda ||23||

She ascended; she came to the Fathers; the Fathers called to her: O svadhā́, come! of her king Yama was young, the silver-vessel [was] vessel; her Antaka son of Mṛityu milked; from her he milked svadhā́; that svadhā́ the Fathers subsist upon: one to be subsisted upon becometh he who knoweth thus.