The Pitris said If a bull of blue complexion upon being liberated raises a (small) quantity of water with its tail the Pitris become pleased with that water for full sixty thousand years.
पितर ऊचुः नीलषण्डस्य लाङ्गुलं तोयमभ्युद्धरेद् यदि॥ षष्टिं वर्षसहस्राणि पितरस्तेन तर्पिता:।