Dubbaṇṇiyasuttaṃ [SN 11.22, PTS 1.238]

2.

The Discourse on Ugliness

268. At Sāvatthī in Jeta's Grove. There, etc. said this - "Once in the past, monks, a certain demon, ugly and dwarfish, sat down on the seat of Sakka, the lord of the gods. Thereupon, monks, the gods of the Thirty-three grumbled, criticised, and complained - 'Wonderful indeed, friend, marvellous indeed, friend! This demon, ugly and dwarfish, is seated on the seat of Sakka, the lord of the gods!' In whatever way, monks, the gods of the Thirty-three grumbled, criticised, and complained, in that way that demon became even more handsome, even more fair to behold, and even more pleasing.

"Then, monks, the gods of the Thirty-three approached Sakka, the lord of the gods; having approached, they said this to Sakka, the lord of the gods - 'Here, sir, a certain demon, ugly and dwarfish, is seated on the seat of Sakka, the lord of the gods. Thereupon, sir, the gods of the Thirty-three grumble, criticise, and complain - Wonderful indeed, friend, marvellous indeed, friend! This demon, ugly and dwarfish, is seated on the seat of Sakka, the lord of the gods. In whatever way, sir, the gods grumble, criticise, and complain, in that way that demon becomes even more handsome, even more fair to behold, and even more pleasing. He must surely, sir, be a wrath-eating demon.'

"Then, monks, Sakka, the lord of the gods, approached that wrath-eating demon; having approached, having arranged his upper robe on one shoulder, having placed his right knee on the ground, having extended joined palms in salutation towards that wrath-eating demon, he announced his name three times - 'I am Sakka, sir, the lord of the gods; I am Sakka, sir, the lord of the gods.' In whatever way, monks, Sakka, the lord of the gods, announced his name, in that way that demon became even uglier and even more dwarfish. Having become even uglier and even more dwarfish, he disappeared right there." Then, monks, Sakka, the lord of the gods, having sat down on his own seat, conciliating the gods of the Thirty-three, at that time spoke these verses -