Sahih al-Bukhari 1814
صحيح البخاري#1814Sahihحَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، أَخْبَرَنَا مَالِكٌ، عَنْ حُمَيْدِ بْنِ قَيْسٍ، عَنْ مُجَاهِدٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي لَيْلَى، عَنْ كَعْبِ بْنِ عُجْرَةَ ـ رضى الله عنه ـ عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم أَنَّهُ قَالَ " لَعَلَّكَ آذَاكَ هَوَامُّكَ ". قَالَ نَعَمْ يَا رَسُولَ اللَّهِ. فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " احْلِقْ رَأْسَكَ وَصُمْ ثَلاَثَةَ أَيَّامٍ، أَوْ أَطْعِمْ سِتَّةَ مَسَاكِينَ، أَوِ انْسُكْ بِشَاةٍ ".
Narrated `Abdur-Rahman bin Abu Layla:Ka`b bin 'Ujra said that Allah's Messenger (ﷺ) said to him (Ka`b), "Perhaps your lice have troubled you?" Ka`b replied, "Yes! O Allah's Messenger (ﷺ)." Allah's Messenger (ﷺ) said, "Have your head shaved and then either fast three days or feed six poor persons or slaughter one sheep as a sacrifice
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 27:9