Agniveshyagrihyasutra 2.6.4.6

2.6.4.6

yadṛco 'dhīte payasaḥ kūlyā asya pitṝn svadhā upakṣaranti yadyajūm̐ṣi ghṛtasya kūlyā yatsāmāni madhvaḥ kūlyā yadatharvāṅgirasaḥ somasya kūlyā yad brāhmaṇāni kalpān gāthā nārāśaṃsīritihāsapurāṇānītyamṛtasya kūlyāḥ \

When he recites the Ṛgveda verses, streams of milk flow as svadhā to his ancestors; when the Yajurveda formulas, streams of clarified butter; when the Sāmaveda chants, streams of honey; when the Atharvāṅgiras formulas, streams of soma; when the Brāhmaṇas, the ritual manuals, the heroic songs, the eulogies of men, the historical legends, and the ancient lore, streams of nectar [flow to them].