Agniveshyagrihyasutra 1.2.2.20

1.2.2.20

evaṃ pārāyaṇasamāptau kāṇḍādidūrvāropaṇāntamudadhidhāvanavarjaṃ nityamevādbhirdevānṛṣīn pitṝṃśca tarpayanti tarpayanti \\2\\

Thus, at the conclusion of the complete recitation of the Veda, up to the planting of dūrvā grass beginning from the kāṇḍa, excluding the running into the water-reservoir, they regularly gratify the gods, the sages, and the ancestors with water—gratify them.