The Qur'an describes the struggle of Prophet Luth as follows: “And [We had sent] Lot when he said to his people, 'Do you commit such immorality as no one has preceded you with from among the worlds? Indeed, you approach men with desire, instead of women. Rather, you are a transgressing people'. But the answer of his people was only that they said, 'Evict them from your city! Indeed, these are indeed men who want to be clean and pure!' So We saved him and his family, except for his wife; she was of those who remained [with the evildoers]. And We rained upon them a rain [of stones]. Then see how was the end of the criminals.” (Al-A’raf:80-84)
In Surah Hud verse 82 it was told: “So when Our command came, We made the highest part [of the city] its lowest and rained upon them stones of layered hard clay, [which were].”
The harms of the sexual behavior of Luth's people was highlighted by Rasulullah Sallallahu ‘Alaihi Wassalam:
“Indeed, there is nothing I fear for my ummah more than the deed of the people of Luth.” (at-Tirmidzi, al-Hakim, Ibn Majah).
In Tafsir Al-Azhar, Prof. Hamka explained, how very destructive the disease of Luth's people is, to the point that they are punished severely by Allah Subhanahu Wata’ala. Hamka even mentioned that this same-sex sexual conduct is of lower status as compared to animals.
Even animals, Hamka said, still knows which is the opposite sex. Hamka quoted a hadith of Rasulullah Sallallahu ‘Alaihi Wassalam: “… and when there has been many incidents of men 'approaching' men, then Allah will revoke His hands, so that Allah don't even bother in which Valley they shall perish.” (at-Tirmidzi, al-Hakim, and at-Tabhrani).