Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 26-27
कंसस्तु धनुषो भङ्गं रक्षिणां स्वबलस्य च । वधं निशम्य गोविन्दरामविक्रीडितं परम् ॥ २६ ॥ दीर्घप्रजागरो भीतो दुर्निमित्तानि दुर्मति: । बहून्यचष्टोभयथा मृत्योर्दौत्यकराणि च ॥ २७ ॥
kaṁsas tu dhanuṣo bhaṅgaṁrakṣiṇāṁ sva-balasya cavadhaṁ niśamya govinda-rāma-vikrīḍitaṁ param
Wicked King Kaṁsa, on the other hand, was terrified, having heard how Kṛṣṇa and Balarāma had broken the bow and killed his guards and soldiers, all simply as a game. He remained awake for a long time, and both while awake and while dreaming he saw many bad omens, messengers of death.