Śrīmad-Bhāgavatam · Text 11.1.21
Who is speaking and story frame
तच्चूर्णयित्वा मुषलं यदुराज: स आहुक: ।
समुद्रसलिले प्रास्यल्लोहं चास्यावशेषितम् ॥ २१ ॥
tac cūrṇayitvā muṣalaṁ
yadu-rājaḥ sa āhukaḥ
samudra-salile prāsyal
lohaṁ cāsyāvaśeṣitam
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.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.