Al-Kāfi
Hadith 2099ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنْ حَمَّادٍ عَنْ حَرِيزٍ عَنْ زُرَارَةَ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ الْسَّلام) قَالَ مَنِ اغْتَسَلَ مِنْ جَنَابَةٍ فَلَمْ يَغْسِلْ رَأْسَهُ ثُمَّ بَدَا لَهُ أَنْ يَغْسِلَ رَأْسَهُ لَمْ يَجِدْ بُدّاً مِنْ إِعَادَةِ الْغُسْلِ.
9. Ali ibn Ibrahim has narrated from his father from Hammad from Hariz from Zurarah who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘When taking Ghusl (bath) because of sexual relation, if one does not wash one’s head, then finds out that the head is not washed, he must take Ghusl (bath) again.’”