Chapter on the Description of Ablution and Its Obligations
Tahdhīb al-Aḥkām|Volume 1|Book 1|Chapter 16
أَحْمَدُ بْنُ مُحَمَّدٍ عَنْ صَفْوَانَ عَنِ اَلْعَلاَءِ عَنْ مُحَمَّدِ بْنِ مُسْلِمٍ عَنْ أَحَدِهِمَا عَلَيْهِمَا اَلسَّلاَمُ قَالَ: سَأَلْتُهُ عَنِ اَلرَّجُلِ يَتَوَضَّأُ أَيُبَطِّنُ لِحْيَتَهُ قَالَ« لاَ».
Narrated by Ahmad ibn Muhammad, from Safwan, from Al-'Ala', from Muhammad ibn Muslim, from one of the two Imams عليه السلام:
I asked Imam عليه السلام about a man performing ablution - should he wash the inner part of his beard? Imam عليه السلام said: "No."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 382
- Ṣaḥīḥ al-Tahdhīb, p. 59