The Beard and Mustache
Al-Kāfi|Volume 6|Book 7|Chapter 35
عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ أَبِي عَبْدِ اللَّهِ عَنْ بَعْضِ أَصْحَابِنَا عَنْ عَلِيِّ بْنِ أَسْبَاطٍ عَنْ عَبْدِ اللَّهِ بْنِ عُثْمَانَ أَنَّهُ رَأَى أَبَا عَبْدِ اللَّهِ ( عليه السلام ) أَحْفَى شَارِبَهُ حَتَّى أَلْصَقَهُ بِالْعَسِيبِ .
9. A number of our people have narrated from Ahmad ibn abu ‘Abd Allah from certain persons of his people from Ali ibn Asbat from ‘Abd Allah ibn ‘Uthman who had seen abu ‘Abd Allah عليه السلام, trim his mustache up to the root of the hairs.”’
- Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (22/383)
- Ṣaḥīḥ al-Kāfī