Mbh 13.77.6a

"'Bhishma said, "I have, O son, heard old men recite this history respecting the circumstances under which the Kapila cow was created. I shall recite that old history to thee! In days of yore, the Self-born Brahman commanded the Rishi Daksha, saying,--'Do thou create living creatures!' From desire of doing good to creatures, Daksha, in the first instance, created food. Even as the deities exist, depending upon nectar, all living creatures, O puissant one, live depending upon the sustenance assigned by Daksha. Among all objects mobile and immobile, the mobile are superior. Among mobile creatures Brahmanas are superior. The sacrifices are all established upon them. It is by sacrifice that Soma (nectar) is got. Sacrifice has been established upon kine.[372] The gods become gratified through sacrifices. As regards the Creation then, the means of support came first, creatures came next. As soon as creatures were born, they began to cry aloud for food. All of them then approached their creator who was to give them food like children approaching their father or mother. Knowing the intention which moved all his creatures, the holy lord of all creatures, viz., Daksha, for the sake of the beings he had created, himself drank a quantity of nectar. He became gratified with the nectar he quaffed and thereupon an eructation came out, diffusing an excellent perfume all around. As the result of that eructation, Daksha saw that it gave birth to a cow which he named Surabhi. This Surabhi was thus a daughter of his, that had sprung from his mouth. The cow called Surabhi brought forth a number of daughters who came to be regarded as the mothers of the world. Their complexion was like that of gold, and they were all Kapilas. They were the means of sustenance for all creatures.