Sahih al-Bukhari, Hadith 6297 ⓘ
Narrated Abu Huraira: The Prophet said "Five things are in accordance with Al Fitra (i.e. the tradition of prophets): to be circumcised, to shave the pelvic region, to pull out the hair of the armpits, to cut short the moustaches, and to clip the nails.'
حَدَّثَنَا يَحْيَى بْنُ قُزَعَةَ، حَدَّثَنَا إِبْرَاهِيمُ بْنُ سَعْدٍ، عَنِ ابْنِ شِهَابٍ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " الْفِطْرَةُ خَمْسٌ الْخِتَانُ، وَالاِسْتِحْدَادُ، وَنَتْفُ الإِبْطِ، وَقَصُّ الشَّارِبِ، وَتَقْلِيمُ الأَظْفَارِ " .
also referenced under: Book 79, Hadith 69 (In-Book) & Volume 8, Book 74, Hadith 312 (USC-MSA)