Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 51
Sanskrit:
तमापतन्तं स निगृह्य तुण्डयो-र्दोर्भ्यां बकं कंससखं सतां पति: ।पश्यत्सु बालेषु ददार लीलयामुदावहो वीरणवद् दिवौकसाम् ॥ ५१ ॥
ITRANS:
tam āpatantaṁ sa nigṛhya tuṇḍayordorbhyāṁ bakaṁ kaṁsa-sakhaṁ satāṁ patiḥpaśyatsu bāleṣu dadāra līlayāmudāvaho vīraṇavad divaukasām
Translation:
When Kṛṣṇa, the leader of the Vaiṣṇavas, saw that the demon Bakāsura, the friend of Kaṁsa, was endeavoring to attack Him, with His arms He captured the demon by the two halves of the beak, and in the presence of all the cowherd boys Kṛṣṇa very easily bifurcated him, as a child splits a blade of vīraṇa grass. By thus killing the demon, Kṛṣṇa very much pleased the denizens of heaven.