عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ رَضِيَ اللَّهُ عَنْهُ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ الشِّيَاعُ حَرَامٌ قَالَ ابْنُ لَهِيعَةَ يَعْنِي بِهِ الَّذِي يَفْتَخِرُ بِالْجِمَاعِ
Narrated by Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: Shi'a is forbidden. Shi'a means to boast about having intercourse.