Mbh 12.47.2a

"'Vasudeva said, "That tiger among men, Bhishma, who is now lying on a bed of arrows, and who is now like unto a fire that is about to go out, is thinking of me. Hence my mind also was concentrated on him. My mind was concentrated upon him, the twang of whose bowstring and the sound of whose palms Indra himself was unable to bear. I was thinking of him who having vanquished in a trice all the assembled kings (at the Self-choice of the daughters of the king of Kasi) abducted the three princesses for the marriage of his brother Vichitravirya. I was thinking of him who fought continually for three and twenty days with Rama himself of Bhrigu's race and whom Rama was unable to overcome. Collecting all his senses and concentrating his mind by the aid of his understanding, he sought my refuge (by thinking of me). It was for this that I had centered my mind upon him. I was thinking of him whom Ganga conceived and brought forth according to ordinary human laws and whom Vasishtha took as a pupil. I was thinking of that hero of mighty energy and great intelligence who possesses a knowledge of all the celestial weapons as also of the four Vedas with all their branches. I was thinking of him, O son of Pandu, who is the favourite disciple of Rama, the son of Jamadagni, and who is the receptacle of the sciences. I was thinking of that foremost of all persons conversant with morality and duty, of him, O bull of Bharata's race, who knows the Past, the Future, and the Present. After that tiger among kings shall have, in consequences of his own achievements, ascended to heaven, the earth, O son of Pritha, will look like a moonless night. Therefore, O Yudhishthira, submissively approaching Ganga's son, viz., Bhishma of terrible prowess, question him about what thou mayst desire to learn.