Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
bukhari:1811Maḥmūd > ʿAbd al-Razzāq > Maʿmar > al-Zuhrī > ʿUrwah > al-Miswar

Messenger of Allah ﷺ slaughtered (the Hadi) before he had his head shaved and then he ordered his Companions to do the same.  

البخاري:١٨١١حَدَّثَنَا مَحْمُودٌ حَدَّثَنَا عَبْدُ الرَّزَّاقِ أَخْبَرَنَا مَعْمَرٌ عَنِ الزُّهْرِيِّ عَنْ عُرْوَةَ عَنِ الْمِسْوَرِ ؓ

أَنَّ رَسُولَ اللَّهِ ﷺ نَحَرَ قَبْلَ أَنْ يَحْلِقَ وَأَمَرَ أَصْحَابَهُ بِذَلِكَ