Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 10
Sanskrit:
तत: सूक्ष्मतरं ज्योति: कृष्णमाविशदद्भुतम् ।पश्यतां सर्वभूतानां यथा चैद्यवधे नृप ॥ १० ॥
ITRANS:
tataḥ sūkṣmataraṁ jyotiḥkṛṣṇam āviśad adbhutampaśyatāṁ sarva-bhūtānāṁyathā caidya-vadhe nṛpa
Translation:
A most subtle and wondrous spark of light then [rose from the demon’s body and] entered Lord Kṛṣṇa while everyone looked on, O King, just as when Śiśupāla was killed.