Bhagavatapurana 10.46.9

10.46.9

vāsitārthe 'bhiyudhyadbhir nāditaṃ śuśmibhir vṛṣaiḥ /
dhāvantībhiś ca vāsrābhir udho-bhāraiḥ sva-vatsakān //

9. — The Gokula that was most beautiful and resonant with the bellowing of the stout bulls that struggled with one another for the sake of the cow in heat, and of the cows that walked in haste with heavy udders eager to meet their own calves;