Chapter on the Description of Ablution (Wudu)
Tahdhīb al-Aḥkām|Volume 1|Book 1|Chapter 4
وَمَا رَوَاهُ هُوَ أَيْضاً عَنْ فَضَالَةَ عَنِ اَلْحُسَيْنِ بْنِ أَبِي اَلْعَلاَءِ قَالَ قَالَ أَبُو عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ:« اِمْسَحِ اَلرَّأْسَ عَلَى مُقَدَّمِهِ وَ مُؤَخَّرِهِ».
It was also narrated by him from Fadalah, from Al-Husayn bin Abi Al-‘Ala’, who said:
Abu Abdullah عليه السلام said: "Wipe the head over its front and back."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 65
- Ṣaḥīḥ al-Tahdhīb