كتاب المناسك
10  
The Rites of Pilgrimage
(12a)
Chapter: What one who is in the Sacred State must avoid - Section 1
(11)
باب ما يجتنبه المحرم
Mishkat al-Masabih 2688
Ka‘b b. ‘Ujra told that the Prophet came upon him at al-Hudaibiya while he was still in the sacred state before entering Mecca. He was kindling a fire under a pot and lice were falling in large numbers over his face. He asked him whether the insects were annoying him, and when he replied that they were, he said, “Shave your head, and give a faraq (i.e. three sa‘s) to six poor people, or fast three days, or sacrifice an animal.” Bukhari and Muslim.
وَعَنْ كَعْبِ بْنِ عُجْرَةَ رَضِيَ اللَّهُ عَنْهُ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ مَرَّ بِهِ وَهُوَ بِالْحُدَيْبِيَةَ قَبْلَ أَنْ يَدْخُلَ مَكَّةَ وَهُوَ مُحْرِمٌ وَهُوَ يُوقِدُ تَحْتَ قِدْرٍ وَالْقَمْلُ تهافت عَلَى وَجْهِهِ فَقَالَ: «أَتُؤْذِيكَ هَوَامُّكَ؟» . قَالَ: نَعَمْ. قَالَ: «فَاحْلِقْ رَأْسَكَ وَأَطْعِمْ فَرَقًا بَيْنَ سِتَّةِ مَسَاكِينَ» . وَالْفَرَقُ: ثَلَاثَةُ آصُعٍ: «أَوْ صُمْ ثَلَاثَةَ أَيَّام أوانسك نسيكة»
  مُتَّفق عَلَيْهِ   (الألباني) حكم   :
Reference : Mishkat al-Masabih 2688
In-book reference : Book 10, Hadith 178