Reference for Genesis 19:21

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.