Bhagavatapurana 3.18.21

3.18.21

āsanna-śauṇḍīram apeta-sādhvasaṃ kṛta-pratīkāram ahārya-vikramam /
vilakṣya daityaṃ bhagavān sahasra-ṇīr jagāda nārāyaṇam ādi-sūkaram //

21. Observing the son of Diti to be full of heroic spirit and pride, and destitute of fear, and finding him capable of averting every blow aimed at him and possessed of irresistible prowess, the worshipful Brahma the leader of thousands of Rishis, said to Narayana the First Varaha.