In the Mah bh rata , the ‘Grandfather’ of the P avas and Kauravas . Really the sky god Dyaus (one of the eight Vasus: see DITYAS ) incarnate, Bh ma is born as the son of King a tanu and the river Ganges ( Ga ga ). While waiting to die, he rests on a bed of arrows, and exhorts Yudhi hira with the legal and spiritual instruction which constitutes books xii and xiii of the Mah bh rata