Bhagavatapurana 5.10.16

5.10.16

_*
kas tvaṃ nigūḍhaś carasi dvijānāṃ bibharṣi sūtraṃ katamo 'vadhūtaḥ /
kasyāsi kutratya ihāpi kasmāt kṣemāya naś ced asi nota śuklaḥ //

16. "Who art thou of the great Brahmanas (Marichi and other sages) with thy true nature concealed and going about with the sacred thread on; Who art thou among (Dattatreya and other self-less ascetics? To whose race dost thou belong or to what place? What brings Thee here? If thou art here for our well-being, may it not be that thou art the sage Kapila?