Mahāpariḷāhasutta

sn56.43:2.1 When he said this, one of the mendicants said to the Buddha,

sn56.43:2.2 “Sir, that scorching really is mighty, so very mighty.

sn56.43:2.3 Is there any other scorching more mighty and terrifying than this one?”

sn56.43:2.4 “There is, mendicant.”