Mbh 10.18.5

"'Gratified, the great god threw his wrath into the water, O king, that wrath, assuming the form of fire, is always employed in consuming that liquid element. He then gave unto Savitri his arms, Bhaga his eyes, and Pushana his teeth. And he also restored the Sacrifices themselves, O Pandava! The world once more became safe and sound. The gods assigned unto Mahadeva all the libations of clarified butter as the share of great deity. O monarch, when Mahadeva had become angry, the whole world had thus become agitated: when he became gratified everything became safe. Possessed of great energy, the god Mahadeva was gratified with Ashvatthama. It was for this that thy sons, those mighty car-warriors, could be slain by that warrior. It was for this that many other heroes, the Pancalas, with all their followers, could be slain by him. Thou shouldst not suffer thy mind to dwell on it. It was not Drona's son that accomplished that act. It was done through the grace of Mahadeva. Do now what should next be done.'"