4ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنِ ابْنِ الْمُغِيرَةِ عَنْ حَرِيزٍ عَنِ ابْنِ أَبِي يَعْفُورٍ قَالَ قُلْتُ لأَبِي عَبْدِ الله (عَلَيْهِ الْسَّلام) الرَّجُلُ يَرَى فِي الْمَنَامِ وَيَجِدُ الشَّهْوَةَ فَيَسْتَيْقِظُ وَيَنْظُرُ فَلاَ يَجِدُ شَيْئاً ثُمَّ يَمْكُثُ بَعْدُ فَيَخْرُجُ قَالَ إِنْ كَانَ مَرِيضاً فَلْيَغْتَسِلْ وَإِنْ لَمْ يَكُنْ مَرِيضاً فَلاَ شَيْءَ عَلَيْهِ قَالَ فَقُلْتُ لَهُ فَمَا فَرْقٌ بَيْنَهُمَا فَقَالَ لأَنَّ الرَّجُلَ إِذَا كَانَ صَحِيحاً جَاءَ بِدُفْقَةٍ وَقُوَّةٍ وَإِذَا كَانَ مَرِيضاً لَمْ يَجِىْ إِلاَّ بَعْدُ.
4. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from ibn al-Mughirah from Hariz from ibn abu Ya‘fur who has said the following: “I once said to abu ‘Abd Allah (a.s.), there is a man who experiences wet dream and orgasm. He then wakes up and does not find anything, but after a while discharge takes place. He (the Imam) said, ‘If he suffers from an illness, he must take Ghusl (bath), but if he does not suffer from any illness he is not obligated for Ghusl (bath).’ I then asked him (the Imam), ‘What is the difference between the two cases?’ He (the Imam) said, ‘It is because in the case of one without illness, it comes spurting and with force, but in the case of one suffering from an illness it comes later.’”