Hadith
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا سُفْيَانُ، عَنِ الزُّهْرِيِّ، عَنْ سَعِيدٍ، عَنْ أَبِي هُرَيْرَةَ، يَبْلُغُ بِهِ النَّبِيَّ صلى الله عليه وسلم " الْفِطْرَةُ خَمْسٌ أَوْ خَمْسٌ مِنَ الْفِطْرَةِ الْخِتَانُ وَالاِسْتِحْدَادُ وَنَتْفُ الإِبْطِ وَتَقْلِيمُ الأَظْفَارِ وَقَصُّ الشَّارِبِ " .
Narrated Abu Hurairah:The Prophet (ﷺ) as saying: The inborn characteristics of man are five. Another version says: Five things are of the inborn characteristics of man: circumcision, shaving the pubes, plucking out hair under the armpit, paring the nails and clipping the moustaches
Sahih · Al-Albani
Sunan Abi Dawud 4198 ·Book 35, Hadith 40·Also available on sunnah.com·