Midrasz do Rodzaju 18:21

THE SIN OF SODOM
THE third descent which He descended || was at Sodom, as it is said, "I will go down now and see" (Gen. 18:21). The Holy One, blessed be He, said: Shall I not tell My friend Abraham an important matter which I will do in My world in the future, as it is said, "And the Lord said, Shall I hide from Abraham that which I do?" (Gen. 18:17). Rabbi Chanina, son of Dosa, said: The Holy One, blessed be He, was revealed, and three angels (appeared) unto our father Abraham, as it is said, "And he lifted up his eyes and looked, and, lo, three men" (Gen. 18:2). He began to inform him about the conception of the womb by Sarah his wife, as it is said, "I will certainly return unto thee when the season cometh round" (Gen. 18:10). Afterwards He told (him) about the doom of Sodom, as it is said, "And the Lord said, Because the cry of Sodom and Gomorrah is great" (Gen. 18:20).

Rabbi Jehudah said: They made a proclamation in Sodom (saying): Everyone who strengthens the hand of the poor or the needy with a loaf of bread shall be burnt by fire. Peleṭith, daughter of Lot, was wedded to one of the magnates of Sodom. She saw a certain very poor man in the street of the city, and her soul was grieved on his account, as it is said, "Was not my soul grieved for the needy?" (Job 30:25). What did she do? Every day when she went out to draw water she put in her bucket all sorts of provisions from her home, and she fed that poor man. The men of Sodom said: How does this poor man live? When they ascertained the facts, they brought her forth to be burnt with fire. She said: Sovereign of all worlds ! Maintain my right and my cause (at the hands of) the men of Sodom. And her cry ascended before the Throne of Glory. In that hour the Holy One, blessed be He, said: "I will now descend, and I will see" (Gen. 18:21) whether the men of Sodom have done according to the cry of this young woman, I will turn her foundations upwards, and the surface thereof shall be turned downwards, as it is said, "I will now descend, and I will see whether they have done altogether according to her cry, which is come unto me" (ibid.). "According to their cry" is not written here (in the text), only "According to her cry."