וַיֹּ֣אמֶר אֵלָ֔יו הִנֵּה֙ נָשָׂ֣אתִי פָנֶ֔יךָ גַּ֖ם לַדָּבָ֣ר הַזֶּ֑ה לְבִלְתִּ֛י הָפְכִּ֥י אֶת־הָעִ֖יר אֲשֶׁ֥ר דִּבַּֽרְתָּ׃
And he said unto him: ‘See, I have accepted thee concerning this thing also, that I will not overthrow the city of which thou hast spoken.
Find Mishnaic references to Genesis 19:21: passages from the 63 tractates of the Mishnah that cite or discuss this verse, free.