The Book of Purification and its Sunnah
1/50. Chapter:
Concerning running the fingers through the beard (when performing ablution)
Sunan Ibn Majah
حَدَّثَنَا هِشَامُ بْنُ عَمَّارٍ، حَدَّثَنَا عَبْدُ الْحَمِيدِ بْنُ حَبِيبٍ، حَدَّثَنَا الأَوْزَاعِيُّ، حَدَّثَنَا عَبْدُ الْوَاحِدِ بْنُ قَيْسٍ، حَدَّثَنِي نَافِعٌ، عَنِ ابْنِ عُمَرَ، قَالَ كَانَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ إِذَا تَوَضَّأَ عَرَكَ عَارِضَيْهِ بَعْضَ الْعَرْكِ ثُمَّ شَبَكَ لِحْيَتَهُ بِأَصَابِعِهِ مِنْ تَحْتِهَا .
It was narrated that Ibn 'Umar said: "Whenever the Messenger of Allah performed ablution, he rubbed the sides of his face then run his fingers through his beard from beneath."
Reference : Sunan Ibn Majah 432In-book reference : Book 1, Hadith 166English translation : Vol. 1, Book 1, Hadith 432