Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 22-23

Sanskrit:

नाचलत्तत्प्रहारेण मालाहत इव द्विप: । बाह्वोर्निगृह्य चाणूरं बहुशो भ्रामयन् हरि: ॥ २२ ॥ भूपृष्ठे पोथयामास तरसा क्षीणजीवितम् । विस्रस्ताकल्पकेशस्रगिन्द्रध्वज इवापतत् ॥ २३ ॥

ITRANS:

nācalat tat-prahāreṇamālāhata iva dvipaḥbāhvor nigṛhya cāṇūraṁbahuśo bhrāmayan hariḥ

Translation:

No more shaken by the demon’s mighty blows than an elephant struck with a flower garland, Lord Kṛṣṇa grabbed Cāṇūra by his arms, swung him around several times and hurled him onto the ground with great force. His clothes, hair and garland scattering, the wrestler fell down dead, like a huge festival column collapsing.

Purport:

Śrīla Śrīdhara Svāmī explains the words indra-dhvaja as follows: “In Bengal, on the occasion of a certain festival, people erect a tall column in the form of a man and decorate it with flags, banners, etc. He [Cāṇūra] fell just as such a pole might fall.”