Bhagavatapurana 8.21.3

8.21.3

athāṅghraye pronnamitāya viṣṇor upāharat padmabhavo 'rhaṇodakam /
samarcya bhaktyābhyagṛṇāc chuciśravā yannābhipaṅkeruhasambhavaḥ svayam //

3. All came up, bowed to and praised the Lord's foot, by virtue of contemplating which they were all able to go to the region of Brahma, which is not accessible by means of Karma. Then the lotus-born brought water to worship Vishnu's foot lifted up into the heavens; he (Brahma) being one possessed of purest name and true knowledge devoutly worshipped it and sang its praises; for he is himself born of the lotus that adorns the navel of the Lord.