One verse

Srimad Bhagavatam 10.56.24

10.56.24

आसीत्तदष्टाविंशाहमितरेतरमुष्टिभि: । वज्रनिष्पेषपरुषैरविश्रममहर्निशम् ॥ २४ ॥

āsīt tad aṣṭā-vimśāham itaretara-muṣṭibhiḥ vajra-niṣpeṣa-paruṣair aviśramam ahar-niśam

āsīt
was
tat
that
aṣṭā-viṁśa
twenty-eight
aham
days
itara-itara
with one another’s
muṣṭibhiḥ
fists
vajra
of lightning
niṣpeṣa
like the blows
paruṣaiḥ
hard
aviśramam
without pause
ahaḥ-niśam
day and night

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.