One verse

Srimad Bhagavatam 10.44.3

10.44.3

अरत्नी द्वे अरत्निभ्यां जानुभ्यां चैव जानुनी । शिर: शीर्ष्णोरसोरस्तावन्योन्यमभिजघ्नतु: ॥ ३ ॥

aratnī dve aratnibhyāṁ jānubhyāṁ caiva jānunī śiraḥ śīrṣṇorasoras tāv anyonyam abhijaghnatuḥ

aratnī
against the opponent’s fists
dve
two
aratnibhyām
their fists
jānubhyām
their knees
ca eva
also
jānunī
against the opponent’s knees
śiraḥ
head
śīrṣṇā
with head
urasā
with chest
uraḥ
chest
tau
they in pairs
anyonyam
each other
abhijaghnatuḥ
struck

They each struck fists against fists, knees against knees, head against head and chest against chest.