Mahabharata 3.175.16

3.175.16

sa bhīmaṃ sahasābhyetya pṛdākuḥ kṣudhito bhṛśam |
jagrāhājagaro grāho bhujayorubhayorbalāt || 16 ||

Then the mighty Bhimasena, like unto the Lord of the Celestials, saw a serpent of colossal proportions, living in one of the mountain fastnesses and covering the (entire) cave with its body and causing one's hair to stand on end (from fright). It had its huge body stretched like a hillock, and it possessed gigantic strength, and its body was speckled with spots and it had a turmeric-like (yellow) colour and a deep copper-coloured mouth of the form of a cave supplied with four teeth; and with glaring eyes, it was constantly licking the corners of its mouth. And it was the terror of all animated beings and it looked like the very image of the Destroyer Yama; and with the hissing noise of its breath it lay as if rebuking (an in-comer). And seeing Bhima draw so near to him, the serpent, all on a sudden, became greatly enraged, and that goat-devouring snake violently seized Bhimasena in his grip. Then by virtue of the boon that had been received by the serpent, Bhimasena with his body in the serpent's grip, instantly lost all consciousness. Unrivalled by that of others, the might of [paragraph continues] Bhimasena's arms equalled the might of ten thousand elephants combined. But Bhima, of great prowess, being thus vanquished by the snake, trembled slowly, and was unable to exert himself. And that one of mighty arms and of leonine shoulders, though possessed of strength often thousand elephants, yet seized by the snake, and overpowered by virtue of the boon, lost all strength.