O King, thereafter, while the sons of Kaśyapa, both demons and demigods, were engaged in churning the Ocean of Milk, a very wonderful male person appeared.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
अथोदधेर्मथ्यमानात्काश्यपैरमृतार्थिभिः । उदतिष्ठन्महाराज पुरुषः परमाद्भुतः
athodadhermathyamānātkāśyapairamṛtārthibhiḥ | udatiṣṭhanmahārāja puruṣaḥ paramādbhutaḥ
SB 8.8.31