(2) باب إِحْفَاءِ الشَّارِبِ
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.'" (FR)
Reference (FR): Sunan an-Nasa'i 5047 (FR)
In-book reference (FR): Book 48, Hadith 8 (FR)
English translation (FR): Vol. 6, Book 48, Hadith 5050 (FR)