[Machine] He said: While the Messenger of Allah ﷺ was walking in Al-Baqi' during Ramadan, he saw a man who was shaving his head. he (the Prophet) said: "The one who shaves his head and the one who has his head shaved are breaking their fast." This is a clear chain of narrators, including the transmission of the narrators who reported it and the trustworthy ones who confirmed it. It cannot be criticized by any difference among those who were deemed weak by Abi Qilabah and others. And according to Yahya ibn Abi Kathir, there is another sound chain of narration regarding it, according to the conditions of the two Shaykhs.  

أَخْبَرَهُ قَالَ بَيْنَمَا رَسُولُ اللَّهِ ﷺ يَمْشِي بِالْبَقِيعِ فِي رَمَضَانَ إِذْ رَأَى رَجُلًا يَحْتَجِمُ فَقَالَ «أَفْطَرَ الْحَاجِمُ وَالْمَحْجُومُ» فَهَذِهِ الْأَسَانِيدُ الْمُبَيَّنُ فِيهَا سَمَاعُ الرُّوَاةِ الَّذِينَ هُمْ نَاقِلُوهَا وَالثِّقَاتُ الْأَثْبَاتُ لَا تُعَلَّلُ بِخِلَافٍ يَكُونُ فِيهِ بَيْنَ الْمَجْرُوحِينَ عَلَى أَبِي قِلَابَةَ وَغَيْرِهِ وَعِنْدَ يَحْيَى بْنِ أَبِي كَثِيرٍ فِيهِ إِسْنَادٌ آخَرُ صَحِيحٌ عَلَى شَرْطِ الشَّيْخَيْنِ