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