Al-Kāfi

Hadith 1862
sexual-ethics
5- أَحْمَدُ عَنْ جَعْفَرِ بْنِ مُحَمَّدٍ الأشْعَرِيِّ عَنِ ابْنِ الْقَدَّاحِ عَنْ أَبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) قَالَ جَاءَ رَجُلٌ إِلَى أَبِي فَقَالَ يَا ابْنَ رَسُولِ اللهِ إِنِّي ابْتُلِيتُ بِبَلاءٍ فَادْعُ اللهَ لِي فَقِيلَ لَهُ إِنَّهُ يُؤْتَى فِي دُبُرِهِ فَقَالَ مَا أَبْلَى اللهُ عَزَّ وَجَلَّ بِهَذَا الْبَلاءِ أَحَداً لَهُ فِيهِ حَاجَةٌ ثُمَّ قَالَ أَبِي قَالَ اللهُ عَزَّ وَجَلَّ وَعِزَّتِي وَجَلالِي لا يَقْعُدُ عَلَى إِسْتَبْرَقِهَا وَحَرِيرِهَا مَنْ يُؤْتَى فِي دُبُرِهِ.
5. Ahmad has narrated from Ja’far ibn Muhammad al-Ash’ariy from ibn al-Qaddah who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘Once a man came to my father and said, ‘O child of the Messenger of Allah, O Allah, grant compensation to Muhammad and his family worthy of their services to Your cause, I am in an unfortunate condition; please pray for me to Allah.’ He was told that he allows sexual intercourse in his anus.’ He (the Imam) said, ‘Whoever Allah finds to be of any benefit at all He does not permit him to allow sexual intercourse in his anus.’ He (the Imam) then said, ‘Allah, most Majestic, most Glorious, has said, “I swear by my glory and majesty that whoever allows sexual intercourse in his anus will not sit on the Istabraq and silk of paradise.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī