The Grihya Sutras, Part 1 (SBE29), by Hermann Oldenberg, , at sacred-texts.com
1. The new moon that follows after the Phâlguna
full moon, falls under (the Nakshatra) Revatî: on that (new moon day) he shall have the marks made (on his cattle),
2 2. With (the words), 'Thou art the world, thousandfold prospering. To Indra may exertion (?) give thee. Inviolate art thou, unhurt, sap, food, protection. For as many (cows) I shall do this now, for more (than these) may I do it in the latest year.'
3. Of that (cow) that calves first let him sacrifice the biestings with the two verses, 'Yearly the milk of the cow' (Rig-veda X, 87, 17. 18).
4. If she brings forth twin-calves, let him sacrifice with the Mahâvyâhritis, and give the mother of the twins (to the Brâhmanas).
100:2 10, 2. The reading of tvâ sramo dadat is doubtful. See the Various Readings in the German edition.