The Book of Adornment
48/2. Chapter:
Trimming the Mustache
Sunan an-Nasai
أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، قَالَ حَدَّثَنَا الْمُعْتَمِرُ، قَالَ سَمِعْتُ يُوسُفَ بْنَ صُهَيْبٍ، يُحَدِّثُ عَنْ حَبِيبِ بْنِ يَسَارٍ، عَنْ زَيْدِ بْنِ أَرْقَمَ، قَالَ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ " مَنْ لَمْ يَأْخُذْ شَارِبَهُ فَلَيْسَ مِنَّا " .
It was narrated that Zaid bin Al-Arqam said: "I heard the Messenger of Allah [SAW] say: 'Whoever does not take from his mustache, he is not one of us.'"
Reference : Sunan an-Nasa'i 5047In-book reference : Book 48, Hadith 8English translation : Vol. 6, Book 48, Hadith 5050