Shatapatha Brahmana 4.5.5.8

4.5.5.8

ṛtupātramevānvekaśapham prajāyate | tadvai tatpunaryajñe prayujyate tasmādimāḥ prajāḥ punarabhyāvartam prajāyanta itīva vā ṛtupātramitīvaikaśaphasya śira āgrayaṇapātramukthyapātramādityapātrametānyevānu gāvaḥ prajāyante tāni vai tāni punaryajñe prayujyante tasmādimāḥ prajāḥ punarabhyāvartam prajāyante

After the Ritu cup the one-hoofed species is produced. Now that (cup) is again employed in the sacrifice: hence creatures are here produced again and again. And such-like is the Ritu cup, and suchlike the head of the one-hoofed. The Âgrayana cup, the Ukthya cup, and the Âditya cup,--after them cows are produced. Now, these are again employed in the sacrifice: hence creatures are here produced again and again.