Bhagavatapurana 7.13.12

7.13.12

taṃ śayānaṃ dharopasthe kāveryāṃ sahyasānuni /
rajasvalaistanūdeśairnigūḍhāmalatejasam //

12. & 13. Prahlada beloved of Hari went about the world with a few ministers in order to study its true nature (of people at large) and saw some one lying on the bare ground on a cliff of the Sahya mountains at the source of the Kaveri, whose pure brilliancy (glory) was concealed in his limbs thickly covered with dust.