Mahabharata 1.3.63

षष्टिश्च गावस्त्रिशताश्च धेनव; एकं वत्सं सुवते तं दुहन्तिनानागोष्ठा विहिता एकदोहना;स्तावश्विनौ दुहतो घर्ममुक्थ्यम्

ṣaṣṭiśca gāvastriśatāśca dhenava; ekaṃ vatsaṃ suvate taṃ duhantinānāgoṣṭhā vihitā ekadohanā;stāvaśvinau duhato gharmamukthyam

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