Rasikaramana 14.8

ṣaṭcakrasaṃsthānkhalu mātṛkārṇān
ṣaṭcakravarṇāśca viśuddhadehāḥ
bravīmyahorātrata eva jīvaḥ
śvāsāṃśca yāvatprakaroti haṃsaḥ