Mbh 8.34.8c

Seeing the energies of the entire universe united together in one place, O sire, the gods wondered, and at last represented unto that illustrious Deity that the car was ready. After, O monarch, that best of cars had thus been constructed by the gods, O tiger among men, for grinding their foes, Sankara placed upon it his own celestial weapons. Making the sky its flagstaff, he placed upon it his bovine bull. The Brahmana's rod, the rod of Death, Rudra's rod, and Fever became the protectors of the sides of that car and stood with faces turned towards all sides. Atharvan and Angirasa became the protectors of the car-wheels of that illustrious warrior. The Rigveda, the Samaveda, and the Puranas stood in advance of that car. The histories and the Yajurveda became the protectors of the rear. All sacred Speeches and all the Sciences stood around it, and all hymns, O monarch, and the Vedic sound of Vashat also. And the syllable Om, O king, standing in the van of that car, made it exceedingly beautiful. Having made the Year adorned with the six seasons his bow, he made his own shadow the irrefragable string of that bow in that battle. The illustrious Rudra is Death's self. The Year became his bow; Kala Ratri the Death-night therefore, which is Rudra's shadow, became the indestructible string of that bow. Vishnu and Agni and Soma became (as already said) the arrow. The universe is said to consist of Agni and Soma. The universe is similarly said to consist of Vishnu. Vishnu is, again, the Soul of the holy Bhava of immeasurable energy. For this the touch of that bow-string became unbearable to the Asuras. And the lord Sankara cast on that arrow his own irresistible and fierce wrath, the unbearable fire of anger, viz., that which was born of wrath of Bhrigu and Angirasa. Then He called Nila Rohita (Blue and Red or smoke)--that terrible deity robed in skins,--looking like 10,000 Suns, and shrouded by the fire of superabundant Energy, blazed up with splendour.