"The Messenger of Allah ﷺ said: 'Whoever does not trim his mustache, he is not from one of us.'"  

قَالَ رَسُولُ اللَّهِ ﷺ مَنْ لَمْ يَأْخُذْ شَارِبَهُ فَلَيْسَ مِنَّا