The Mahabharata/Book 1: Adi Parva…
“ Santanu asked, 'What was the fault of the Vasus and who was Apava, through whose curse the Vasus had to be born among men? What also hath this child of thine, Gangadatta, done for which he shall have to live among men? Why also were the Vasus, the lords of the three worlds, condemned to be born amongst men? ”
