Devibhagavatapurana 3.17.10

3.17.10

nandinyā''sāditaṃ sarvaṃ bhakṣyabhojyādikaṃ ca yat |
bhuktvā rājā sasainyaśca vāñchitaṃ tatra bhojanam ||

There was a cow, named Nandinî, of Vas’istha. The Muni prepared all sorts of eatables from her milk and entertained them all. The king with his whole army was very much pleased; and, coming to know of the divine power of the cow, asked Vas’istha to give his cow Nandinî over to him and said “The udder of your cow Nandinî is like a big jar. I will give you thousand cows like that; I pray you to let me have your cow Nandinî.”