Matsya Purana 58.47

58.47

kanakālaṅkṛtāṃ kṛtvā jale gāmavatārayet.
sāmagāya ca sā deyā brāhmaṇāya viśāmpate.. 58.43 ..

Later on, on some auspicious day and hour, as calculated by the astrologer (Sâmvatsara), the worshipper should give away after making her pass through the water of the pond, etc., to be consecrated, a cow decked with gold, to the Brâhmaṇa versed in the Sâmaveda, after chanting the text of the Vedas accompanied with music.—42-43.