Fornication
Al-Kāfi|Volume 5|Book 3|Chapter 184
1- عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنْ عُثْمَانَ بْنِ عِيسَى عَنْ عَلِيِّ بْنِ سَالِمٍ عَنْ أَبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) قَالَ إِنَّ أَشَدَّ النَّاسِ عَذَاباً يَوْمَ الْقِيَامَةِ رَجُلٌ أَقَرَّ نُطْفَتَهُ فِي رَحِمٍ يَحْرُمُ عَلَيْهِ.
1. Ali ibn Ibrahim has narrated from his father from ‘Uthman ibn ‘Isa from Ali ibn Salim who has said the following: “Abu ‘Abd Allah عليه السلام, has said, ‘On the Day of Judgment of the people the one who suffers the most intense suffering is one who places his seed in the womb of one who with whom going to bed is unlawful.’”
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