Srimad-Bhagavatam: Canto 11 - Chapter 1 - Verse 21

Sanskrit:

तच्चूर्णयित्वा मुषलं यदुराज: स आहुक: ।समुद्रसलिले प्रास्यल्ल‍ोहं चास्यावशेषितम् ॥ २१ ॥

ITRANS:

tac cūrṇayitvā muṣalaṁyadu-rājaḥ sa āhukaḥsamudra-salile prāsyallohaṁ cāsyāvaśeṣitam

Translation:

After having the club ground to bits, King Āhuka [Ugrasena] of the Yadus personally threw the pieces, along with the remaining lump of iron, into the water of the ocean.

Purport:

King Ugrasena thought, “Sāmba and the others should not feel any shame or fear,” and thus without even consulting Śrī Kṛṣṇa he ordered the club ground to bits and thrown into the water, along with a small iron lump that remained, which he considered insignificant.