Shiva Purana
गौर्दोग्धुं महत्प्रीत्या रोदनं चाकरोत्तदा ॥ दृष्ट्वा च रोदनं तस्या वत्सो वाक्यमथाब्रवीत् ॥ ८ ॥
For the pleasure of getting milked, the cow mooed loudly. On hearing the mooing sound of the cow, the calf said.
english translation
gaurdogdhuM mahatprItyA rodanaM cAkarottadA ॥ dRSTvA ca rodanaM tasyA vatso vAkyamathAbravIt ॥ 8 ॥
hk transliteration by Sanscript