Shiva Purana
ताभ्यां प्रववृत्ते युद्धं विष्णोरतुलतेजसः ॥ पञ्चवर्षसहस्राणि बाहुयुद्धमभूत्तदा ॥ ७१॥
A battle ensued between Viṣṇu of unequalled splendour and the two Daityas lasting for five thousand years. Then there ensued a hand-to-hand fight.
english translation
tAbhyAM pravavRtte yuddhaM viSNoratulatejasaH ॥ paJcavarSasahasrANi bAhuyuddhamabhUttadA ॥ 71॥
hk transliteration by Sanscript