رَوَى صَفْوَانُ بْنُ مِهْرَانَ عَنْ عَامِرِ بْنِ اَلسِّمْطِ عَنْ عَلِيِّ بْنِ اَلْحُسَيْنِ عَلَيْهِمَا اَلسَّلاَمُ: فِي اَلرَّجُلِ يَقَعُ عَلَى أُخْتِهِ قَالَ "يُضْرَبُ ضَرْبَةً بِالسَّيْفِ بَلَغَتْ مِنْهُ مَا بَلَغَتْ فَإِنْ عَاشَ خُلِّدَ فِي اَلْحَبْسِ حَتَّى يَمُوتَ".
Safwan ibn Mihran narrated from Amir ibn al-Simt, from Imam Ali ibn Al-Hussain (a.s) regarding a man who commits intercourse with his sister. Imam (a.s) said: "He is struck with a sword, and whatever injury it causes will be his fate. If he survives, he is to be imprisoned for life until he dies."