Shiva Purana
नंदा सुनंदा सुरभिः सुशीला सुमनास्तथा ॥ पञ्चगोमातरस्त्वेताश्शिवलोके व्यवस्थिताः ॥ १४४ ॥
Nanda Sunanda Surabhi Sushila and Sumana These five mothers of cows are situated in the world of Lord Shiva.
english translation
naMdA sunaMdA surabhiH suzIlA sumanAstathA ॥ paJcagomAtarastvetAzzivaloke vyavasthitAH ॥ 144 ॥
hk transliteration by Sanscript