Bulugh al-Maram 8 Marriage كتاب النكاح 57

وَعَنِ ابْنِ عَبَّاسٍ – رَضِيَ اَللَّهُ عَنْهُمَا- قَالَ : قَالَ رَسُولُ اَللَّهِ – صلى الله عليه وسلم -{ لَا يَنْظُرُ اَللَّهُ إِلَى رَجُلٍ أَتَى رَجُلاً أَوْ اِمْرَأَةً فِي دُبُرِهَا } رَوَاهُ اَلتِّرْمِذِيُّ , وَالنَّسَائِيُّ , وَابْنُ حِبَّانَ , وَأُعِلَّ بِالْوَقْفِ 1 . 1 – صحيح بشواهده.

Narrated Ibn ‘Abbas (RA): Allah’s Messenger (صلى الله عليه وسلم) said: “Allah will not look at a man who has intercourse with a man or a woman through the anus.” [Reported by at-Tirmidhi, an-Nasa’i and Ibn Hibban, but it was considered to be defective for being Mawquf (saying of a Companion, i.e. Ibn ‘Abbas)].