What Nullifies Ablution
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 16
وَ سَأَلَ إِسْمَاعِيلُ بْنُ جَابِرٍ أَبَا عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ: عَنِ اَلرَّجُلِ يَأْخُذُ مِنْ أَظَافِيرِهِ وَ شَارِبِهِ أَ يَمْسَحُهُ بِالْمَاءِ فَقَالَ «لاَ هُوَ طَهُورٌ.
Ismail ibn Jaber asked Imam Jafar ibn Muhammad Al-Sadiq عليه السلام about a man who trims his nails and mustache: should he wipe them with water afterward? Imam عليه السلام said: 'No, he is already pure.'.
- Ṣaḥīḥ al-Faqīh