The Messenger of Allah ﷺ said, "Five practices are part of the natural disposition: circumcision, shaving the pubic hair, trimming the moustache, clipping the nails, and plucking the underarm hair."
أخبرنا الحارث بن مسكين قراءة عليه وأنا أسمع عن ابن وهب عن يونس عن ابن شهاب عن سعيد بن المسيب
عن رسول الله ﷺ قال الفطرة خمس الاختتان والاستحداد وقص الشارب وتقليم الأظفار ونتف الإبط
Agreed upon by Bukhari and Muslim. Bukhari, Book of Clothing, Chapter on Trimming the Mustache, hadith (5890-888), from the hadith of Ibn Shihab Zuhri and others. And Muslim, Book of Purification, Chapter on the Characteristics of fitrah, hadith (257) (50), from the hadith of Ibn Wahb. It is also in Kubra, hadith (10), and see the following hadith (11).