Sunan an-Nasa'i 15
سنن النسائي#15SahihIt was narrated from Ibn 'Umar that the Prophet (ﷺ) said:"Trim the mustache and let the beard grow
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 1:15