Mahabharata 1.93.9

1.93.9

anugrahārthaṃ jagataḥ sarvakāmadughāṃ varām |
tāṃ lebhe gāṃ tu dharmātmā homadhenuṃ sa vāruṇiḥ || 9 ||

"Daksha had a daughter known by the name of Surabhi, who, O bull of Bharata's race, for benefiting the world, brought forth, by her connection with Kasyapa, a daughter (Nandini) in the form of a cow. That foremost of all kine, Nandini, was the cow of plenty (capable of granting every desire). The virtuous son of Varuna obtained Nandini for his Homa rites. And Nandini, dwelling in that hermitage which was adored by Munis, roamed about fearlessly in those sacred and delightful woods.