Bhagavatapurana 10.37.5

10.37.5

so 'py asya vaktre bhujam uttaraṃ smayan % praveśayām āsa yathoragaṃ bile //

He, smiling, thrust His left arm into his mouth, as if a serpent into a hole.

10.37.5.p2

dantā nipetur bhagavad-bhuja-spṛśas $ te keśinas tapta-maya-spṛśo yathā &

Touching the Lord’s arm, Keśī’s teeth fell out / as if touching heated iron,

6. On contact with the Lord's arm Kesin's teeth dropped down like those when in contact with a heated iron rod, and the Lord's arm in the interior of his body grew in volume like the disease of Jalodara if neglected.

10.37.5.p3

dantā nipetur bhagavad-bhuja-spṛśas $ te keśinas tapta-maya-spṛśo yathā &

touching the Lord’s arm, Keśī’s teeth fell out / as if touching heated iron;