Matsyapurana 82.4

82.4

laghveṇakājinaṃ tadvad vatsaṃ ca parikalpayet
prāṅmukhīṃ kalpayeddhenum udakpādāṃ savatsakām //

The floor should be plastered with cowdung, the Kuśa grass should be spread on all sides, and then over it should be placed a black antelope skin of four hands in length with its neck towards the east. This is meant for the cow. A smaller deerskin should be spread on the floor, near the first, and it should be meant for her calf. The cow should be made to face the east and the calf the north.—3-4.