The Messenger of Allah ﷺ said, "Five practices are part of the natural disposition," or, "Five things belong to the natural disposition: circumcision, shaving the pubic hair, trimming the nails, plucking the underarm hair, and clipping the moustache."
حدثنا أبو بكر بن أبي شيبة حدثنا سفيان بن عيينة عن الزهري عن سعيد بن المسيب
قال رسول الله ﷺ الفطرة خمس أو خمس من الفطرة الختان والاستحداد وتقليم الأظفار ونتف الإبط وقص الشارب
Bukhari narrated it in the Book of Clothing, chapter on trimming the mustache, no. 5889, and Muslim narrated it in the Book of Purification, chapter on the qualities of fitrah, no. 257, from the hadith of Sufyan bin Uyayna with this same chain, and it is in his Juz (11).