The Prophet ﷺ gave the family of Jafar three days before coming to them. Then he came and said, "Do not weep for my brother after this day." He then said, "Bring me my brother's sons." We were brought to him like little chicks, and he said, "Call the barber for me." He instructed him, and the barber shaved our heads.
حدثنا عقبة بن مكرم وابن المثنى قالا حدثنا وهب بن جرير حدثنا أبي قال سمعت محمد بن أبي يعقوب يحدث عن الحسن بن سعد
أن النبي ﷺ أمهل آل جعفر ثلاثا أن يأتيهم ثم أتاهم فقال لا تبكوا على أخي بعد اليوم ثم قال ادعوا لي بني أخي فجيء بنا كأنا أفرخ فقال ادعوا لي الحلاق فأمره فحلق رءوسنا
[Its chain of transmission is sahih] Nasai narrated it in the chapter on adornment, the section on shaving the heads of boys, hadith no. 5229, from the hadith of Wahb bin Jareer through this route, and Nawawi graded it sahih according to the standard of Bukhari and Muslim (Riyadh al-Saliheen, hadith no.