Sunan An Nasai 8

It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) said: The Fitrah are five: Circumcision, removing the pubes, trimming the mustache, clipping the nails, and plucking the armpit hairs. ..

It was narrated that Abu Hurairah said: The Messenger of Allah (ﷺ) said: 'The Fitrah are five: Trimming the mustache, plucking the armpit hairs, clipping the nails, removing the pubes, and circumcision.' ..

It was narrated from Abu Hurairah that the Prophet (ﷺ) said: The Fitrah are five: Circumcision, shaving the pubes, plucking the armpit hairs, clipping the nails and taking from the mustache. ..

It was narrated from Ibn 'Umar that the Messenger of Allah (ﷺ) said: The deeds connected to the Fitrah are: Clipping the nails, removing the mustache and shaving the pubes. ..

It was narrated that Zaid bin Arqam said: The Messenger of Allah (ﷺ) said: 'Whoever does not trim his mustache, he is not from one of us.' ..

It was narrated that Anas bin Malik said: A time limit was set for us, by the Messenger of Allah (ﷺ), regarding trimming the mustache, clipping the nails and plucking the pubes; we were not to leave that for more than forty days, on one occasion..