The Great Epic of the Bhārata dynasty 1.187.30

1.187.30

eṣa dharmo dhruvo rājaṃścarainamavicārayan |
mā ca te'tra viśaṅkā bhūtkathaṃcidapi pārthiva || 30 ||

'Drupada answered, 'O scion of Kuru's race, it hath been directed that one man may have many wives. But it hath never been heard that one woman may have many husbands! O son of Kunti, as thou art pure and acquainted with the rules of morality, it behoveth thee not to commit an act that is sinful and opposed both to usage and the Vedas. Why, O prince, hath thy understanding become so?' Yudhishthira said in reply, 'O monarch, morality is subtle. We do not know its course. Let us follow the way trodden by the illustrious ones of former ages. My tongue never uttered an untruth. My heart also never turneth to what is sinful. My mother commandeth so; and my heart also approveth of it. Therefore, O king, that is quite conformable to virtue. Act according to it, without any scruples. Entertain no fear, O king, about this matter.'