Hadith 1041
۞
4. It is also narrated that Amirul Momineen (a.s.) said, “
If it is done outside anus, it is called sodomy and if it is inside it, it is disbelief.”
وَ قَالَ ع قَالَ أَمِیرُ الْمُؤْمِنِینَ ع اللِّوَاطُ مَا دُونَ الدُّبُرِ فَهُوَ لِوَاطٌ وَ الدُّبُرُ هُوَ الْکُفْرُ.