Mbh 7.193.1e

Bending his face slightly down, and heaving his breast forward, and closing his eyes, and resting on the quality of goodness, and disposing his heart to contemplation, and thinking on the monosyllable Om, representing Brahma, and remembering the puissant, supreme, and indestructible God of gods, the radiant Drona of high ascetic merit, the preceptor (of the Kurus and the Pandavas) repaired to heaven that is so difficult of being attained even by the pious. Indeed, when Drona thus proceeded to heaven it seemed to us that there were then two suns in the firmament. The whole welkin was ablaze and seemed to be one vast expanse of equal light when the sun-like Bharadwaja, of solar effulgence, disappeared. Confused sounds of joy were heard, uttered by the delighted celestials. When Drona thus repaired to the region of Brahman, Dhrishtadyumna stood, unconscious of it all, beside him. Only we five amongst men beheld the high-souled Drona rapt in Yoga proceed to the highest region of blessedness. These five were myself, Dhananjaya, the son of Pritha, and Drona’s son, Aswatthaman, and Vasudeva of Vrishni’s race, and king Yudhishthira the just, the son of Pandu. Nobody else, O king, could see that glory of the wise Drona, devoted to Yoga, while passing out of the world. In fact, all human beings were unconscious of the fact that the preceptor attained to the supreme region of Brahman, a region mysterious to the very gods, and one that is the highest of all. Indeed, none of them could see the preceptor, that chastiser of foes, proceed to the region of Brahman, devoted to Yoga in the company of the foremost of Rishis, his body mangled with arrows and bathed in blood, after he had laid aside his weapons. As regards Prishata’s son, though everybody cried fie on him, yet casting his eyes on the lifeless Drona’s head, he began to drag it. With his sword, then, he lopped off from his foe’s trunk that head,--his foe remained speechless the while. Having slain Bharadwaja’s son.