Markandeyapurana 17.5

17.5

sa somo mānaso jajñe tasyāmatreḥ prajāpateḥ /
putraḥ samastasattvānāmāyurādhāra eva ca //

But while he contemplated her, a powerful wind through and above brought the change that was produced in her. The ten regions of the sky seized the white-lustred form of Brahmā, as it fell all around, in the form of Soma, characterized by passion. That mental Soma was begotten in her as the son of the prajāpati Atri, the life and possessor of every excellence. Magnanimous Viṣṇu being pleased begot of her Dattātreya, the brāhman, in whom goodness predominated, by production from his own body, Dattātreya was he called; he sucked Anasūyā’s breast: he was Viṣṇu indeed incarnate; he was Atri’s second son. He issued from his mother’s womb seven days afterwards, being enraged on seeing that the haughty king of the Haihayas was near and was offending Atri, being angry he at once desired to burn up the Haihaya. Filled with indignation at the long pains and toil of his residence in the womb, a portion of Śiva was born as Durvāsas, in whom darkness predominated. Thus three sons were born of her, being portions of Brahmā, Śiva and Viṣṇu.