Mahabharata 3.225.18

3.225.18

na pāpakaṃ dhyāsyati dharmaputro dhanaṃjayaścāpyanuvartate tam |
araṇyavāsena vivardhate tu bhīmasya kopo'gnirivānilena || 18 ||

The twins also, who are even like a couple of blessed celestials in heaven sunk in woe though deserving of bliss, without doubt pass their nights in restless wakefulness restrained (from avenging their wrongs) by virtue and truth! The mighty son of the Wind-god, who is equal to the Wind-god himself in strength, without doubt, sigheth and restraineth his wrath, being tied through his elder brother in the bonds of truth! Superior in battle to all warriors, he now lieth quiet on the ground, restrained by virtue and truth, and burning to slay my children, he bideth his time. The cruel words that Dussasana spoke after Yudhishthira had been deceitfully defeated at dice, have sunk deep into Vrikodara's heart, and are consuming him, like a burning bundle of straw consuming a fagot of dry wood! The son of Dharma never acteth sinfully; Dhananjaya also always obeyeth him; but Bhima's wrath, in consequence of a life of exile, is increasing like a conflagration assisted by the wind! That hero, burning with rage such as that, squeezeth his hands and breatheth hot and fierce sighs, as if consuming therewith my sons and grandsons! The wielder of the Gandiva and Vrikodara, when angry, are like Yama and Kala themselves; scattering their shafts, which are like unto thunder-bolts, they exterminate in battle the ranks of the enemy.