Matsya Purana 59.12

59.12

payasvinīṃ vṛkṣamadhyādutsṛjet gāmudaṅ‌mukhīm.. 59.10 ..
tato'bhiṣekamantreṇa vādyamaṅgalagītakaiḥ.

After that a milch cow, covered with a piece of white cloth and wearing gold ornaments and having, her horns covered with gold, should be let loose between the trees planted, with her face turned towards the north. A milking vessel of bell-metal should also be included among other things to be given away with the cow.—11.

Then the trees should be watered with (the water contained in) the copper pitchers, after reciting the Mantras of the Ṛik, Yaju, and Sâma, addressed to Varuṇa, accompanied by music and song.—12.