The Mahabharata/Book 1: Adi Parva…
“ There cannot be the least doubt about it that the mother, hath as much power over them as the father. As thou art, indeed, my eldest son according to the ordinance, O Brahmarshi, so is Vichitravirya my youngest son. And as Bhishma is Vichitravirya's brother on the father's side, so art thou his brother on the same mother's side. I do not know what you may think, but this is what, O son, I think. This Bhishma, the son of Santanu, devoted to truth, doth not, for the sake, of truth, entertain the desire of either begetting children or ruling the kingdom. ”
