Paraskaragrihyasutra 2.12.2

2.12.2

udakāntaṃ gatvā 'dbhirdevāṃśchandāṃsi vedānṛṣīnpurāṇācāryān gandharvānitarācāryānsaṃvatsaraṃ ca sāvayavaṃ pit.ṝnācāryānsvāṃśca tarpayeyuḥ \2\

Let them go to the brink of water and make water oblations to the gods, the metres, the Vedas, the Rishis, the ancient teachers, the Gandharvas, the other teachers, the year with its divisions, and to their own ancestors and teachers.