Srimad-Bhagavatam: Canto 6 - Chapter 1 - Verse 6
Sanskrit:
इन्द्रो न वज्रं जगृहे विलज्जित-श्च्युतं स्वहस्तादरिसन्निधौ पुन: ।तमाह वृत्रो हर आत्तवज्रोजहि स्वशत्रुं न विषादकाल: ॥ ६ ॥
ITRANS:
indro na vajraṁ jagṛhe vilajjitaścyutaṁ sva-hastād ari-sannidhau punaḥtam āha vṛtro hara ātta-vajrojahi sva-śatruṁ na viṣāda-kālaḥ
Translation:
Having dropped the thunderbolt from his hand in the presence of his enemy, Indra was practically defeated and was very much ashamed. He dared not pick up his weapon again. Vṛtrāsura, however, encouraged him, saying, “Take up your thunderbolt and kill your enemy. This is not the time to lament your fate.”