Markandeyapurana 81.68

81.68

ṛṣiruvāca
evaṃ stutā tadā devī tāmasī tatra vedhasā /
viṣṇoḥ prabodhanārthāya nihantuṃ madhukaiṭabhau //

The ṛṣi spoke:
Then the goddess of darkness, extolled thus by the Creator there in order to awaken Viṣṇu to slay Madhu and Kaiṭabha, issued forth from his eyes, mouth, nose, arms and heart and breast, and stood in the sight of Brahmā whose birth is inscrutable; and Janārdana, master of the world, being quitted by her, rose up from his couch in the universal ocean; and he saw those two then, Madhu and Kaiṭabha, evil of soul, excelling in heroism and prowess, red-eyed through anger, fully prepared to devour Brahmā. Thereupon the adorable lord Hari rose up and fought with those two, striking them with his arms, for five thousands of years. And they, exceedingly frenzied with their power, deluded by the Great Illusion, exclaimed to Keśava, “Choose a boon from us!”