Śrīmad-Bhāgavatam · Text 10.56.24
Who is speaking and story frame
आसीत्तदष्टाविंशाहमितरेतरमुष्टिभि: ।
वज्रनिष्पेषपरुषैरविश्रममहर्निशम् ॥ २४ ॥
āsīt tad aṣṭā-vimśāham
itaretara-muṣṭibhiḥ
vajra-niṣpeṣa-paruṣair
aviśramam ahar-niśam
The fight went on without rest for twenty-eight days, the two opponents striking each other with their fists, which fell like the cracking blows of lightning.
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.