Tafsir of Al-Hijr 15:71

(Lut) said: "These are my daughters, if you must act (so).'' He reminded them about their womenfolk and what their Lord had created for them in the women of permissible sexual relationships. This issue has already been explained and is no need to repeat the discussion here. All of this happened while they were still unaware of the inevitable calamity and punishment that was about to befall them the following morning. Hence Allah, may He be exalted, said to Muhammad,

لعمرك إنهم لفي سكرتهم يعمهون