2 - Verse 240-241

Sons bestowed by gods were born of them on behalf of Pandu. Yudhi§$hira was born, thanks to the grace of Dharma; Vfkodara was born of Vayu; Dhanafijaya whose valour was equal to that of Sakra was born of Indra. Sahadeva and Nakula were bora to Madri, thanks to the grace of Aivins.