Al-Kāfi - Volume 5 > Detestability of Conjugal Relation in Certain Times
Hadith #3

3- عَنْهُ عَنْ أَبِيهِ عَمَّنْ ذَكَرَهُ عَنْ أَبِي الْحَسَنِ مُوسَى (عَلَيْهِ السَّلام) عَنْ أَبِيهِ عَنْ جَدِّهِ (عَلَيْهِ السَّلام) قَالَ إِنَّ فِيمَا أَوْصَى بِهِ رَسُولُ اللهِ (صَلَّى اللهُ عَلَيْهِ وَآلِه) عَلِيّاً (عَلَيْهِ السَّلام) قَالَ يَا عَلِيُّ لا تُجَامِعْ أَهْلَكَ فِي أَوَّلِ لَيْلَةٍ مِنَ الْهِلالِ وَلا فِي لَيْلَةِ النِّصْفِ وَلا فِي آخِرِ لَيْلَةٍ فَإِنَّهُ يُتَخَوَّفُ عَلَى وَلَدِ مَنْ يَفْعَلُ ذَلِكَ الْخَبَلُ فَقَالَ عَلِيٌّ (عَلَيْهِ السَّلام) وَلِمَ ذَاكَ يَا رَسُولَ اللهِ فَقَالَ إِنَّ الْجِنَّ يُكْثِرُونَ غِشْيَانَ نِسَائِهِمْ فِي أَوَّلِ لَيْلَةٍ مِنَ الْهِلالِ وَلَيْلَةِ النِّصْفِ وَفِي آخِرِ لَيْلَةٍ أَمَا رَأَيْتَ الْمَجْنُونَ يُصْرَعُ فِي أَوَّلِ الشَّهْرِ وَفِي آخِرِهِ وَفِي وَسَطِهِ.

3. It is narrated from the narrator of the previous Hadith from his father from those whom he has mentioned who has said the following: “Abu al-Hassan, Alayhi al-Salam, has narrated from his father from his grandfather who has said, ‘Of the issues that the Messenger of Allah, O Allah, grant compensation to Muhammad and his family worthy of their services to Your cause, taught Ali, Alayhi al-Salam, as advice were the following: O Ali, you must not go to bed with your wife in the first night of a lunar month, in the night of the middle of the month, and in the last night of the month, because it is feared for the child of insanity (being possessed by Jinn).’ Ali, Alayhi al-Salam, asked, ‘Why is it, O Messenger of Allah?’ He (the Messenger of Allah) replied, ‘It is because Jinn frequent overwhelming their women in the first night of a lunar month, in the night of the middle of the month and in the last night of the month. Have you not seen that one possessed by Jinn becomes epileptic in beginning of the month, in the end and in the middle of the night?”’