Mahabharata 1.36.15

गवां प्रचारेष्वासीनं वत्सानां मुखनिःसृतम्भूयिष्ठमुपयुञ्जानं फेनमापिबतां पयः

gavāṃ pracāreṣvāsīnaṃ vatsānāṃ mukhaniḥsṛtambhūyiṣṭhamupayuñjānaṃ phenamāpibatāṃ payaḥ

Our plain-language meaning of this verse is waiting for scholar review.