Yahya related to me from Malik from Humayd bin Qays from Mujahid Abu'l Hajjaj from Ibn Abi Layla from Kab ibn Ujra that the Messenger of Allah ﷺ said to him, "Perhaps your pests are troubling you?" He replied that indeed they were, and the Messenger of Allah ﷺ said, "Shave your head and fast three days or feed six poor men or sacrifice a sheep."

حَدَّثَنِي عَنْ مَالِكٍ، عَنْ حُمَيْدِ بْنِ قَيْسٍ، عَنْ مُجَاهِدٍ أَبِي الْحَجَّاجِ، عَنِ ابْنِ أَبِي لَيْلَى، عَنْ كَعْبِ بْنِ عُجْرَةَ، أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لَهُ " لَعَلَّكَ آذَاكَ هَوَامُّكَ " . فَقُلْتُ نَعَمْ يَا رَسُولَ اللَّهِ . فَقَالَ رَسُولُ اللَّهِ ﷺ " احْلِقْ رَأْسَكَ وَصُمْ ثَلاَثَةَ أَيَّامٍ أَوْ أَطْعِمْ سِتَّةَ مَسَاكِينَ أَوِ انْسُكْ بِشَاةٍ " .