Mahabharata 1.20.2

1.20.2

niśāmya ca bahūnvālānkṛṣṇānpucchaṃ samāśritān |
vinatāṃ viṣaṇṇavadanāṃ kadrūrdāsye nyayojayat || 2 ||

"Sauti said, 'Having crossed the Ocean, Kadru of swift speed, accompanied by Vinata, soon alighted near the horse. They then both beheld that foremost of steeds of great speed, with body white as the rays of the moon but having black hairs (in the tail). And observing many black hairs in the tail, Kadru put Vinata, who was deeply dejected, into slavery. And thus Vinata having lost the wager, entered into a state of slavery and became exceedingly sorry.