Mahabharata 3.28.35

3.28.35

yo na darśayate tejaḥ kṣatriyaḥ kāla āgate |
sarvabhūtāni taṃ pārtha sadā paribhavantyuta || 35 ||

Why, O king, doth not thy wrath blaze up at sight of Nakula, in exile, who so fair and able-bodied and young, is the foremost of all swordsmen? Why, O king, dost thou pardon the foe. O Yudhishthira, at sight of Madri's son, the handsome and brave Sahadeva in exile? Why doth not thy anger blaze up, O king, it sight of both Nakula and Sahadeva overwhelmed with grief, though so undeserving of distress? Why also, O king, dost thou pardon the foe at sight of myself in exile who, born in the race of Drupada and, therefore, the sister of Dhrishtadyumna, am the daughter-in-law of the illustrious Pandu and the devoted wife of heroes? Truly, O thou best of the Bharatas, thou hast no anger, else why is it that thy mind is not moved at sight of thy brothers and myself (in such distress)? It is said that there is no Kshatriya in the world who is bereft of anger. I now behold in thee, however, a refutation of the proverb! That Kshatriya, O son of Pritha, who discovereth not his energy when the opportunity cometh, is ever disregarded by all creatures! Therefore, O king, thou shouldst not extend thy forgiveness to the foe. Indeed, with thy energy, without doubt, thou, mayst slay them all! So also, O king, that Kshatriya who is not appeased when the time for forgiveness cometh, becometh unpopular with every creature and meeteth with destruction both in this and the other world!'"