Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 18
Sanskrit:
हतं कुवलयापीडं दृष्ट्वा तावपि दुर्जयौ । कंसो मनस्यपि तदा भृशमुद्विविजे नृप ॥ १८ ॥
ITRANS:
hataṁ kuvalayāpīḍaṁdṛṣṭvā tāv api durjayaukaṁso manasy api tadābhṛśam udvivije nṛpa
Translation:
When Kaṁsa saw that Kuvalayāpīḍa was dead and the two brothers were invincible, he was overwhelmed with anxiety, O King.