حَدَّثَنَا خَالِدُ بْنُ مَخْلَدٍ، حَدَّثَنَا سُلَيْمَانُ بْنُ بِلاَلٍ، قَالَ حَدَّثَنِي صَالِحُ بْنُ كَيْسَانَ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ، عَنْ زَيْدِ بْنِ خَالِدٍ ـ رضى الله عنه ـ قَالَ خَرَجْنَا مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم عَامَ الْحُدَيْبِيَةِ، فَأَصَابَنَا مَطَرٌ ذَاتَ لَيْلَةٍ، فَصَلَّى لَنَا رَسُولُ اللَّهِ صلى الله عليه وسلم الصُّبْحَ، ثُمَّ أَقْبَلَ عَلَيْنَا فَقَالَ ‏"‏ أَتَدْرُونَ مَاذَا قَالَ رَبُّكُمْ ‏"‏‏.‏ قُلْنَا اللَّهُ وَرَسُولُهُ أَعْلَمُ‏.‏ فَقَالَ ‏"‏ قَالَ اللَّهُ أَصْبَحَ مِنْ عِبَادِي مُؤْمِنٌ بِي وَكَافِرٌ بِي، فَأَمَّا مَنْ قَالَ مُطِرْنَا بِرَحْمَةِ اللَّهِ وَبِرِزْقِ اللَّهِ وَبِفَضْلِ اللَّهِ‏.‏ فَهْوَ مُؤْمِنٌ بِي، كَافِرٌ بِالْكَوْكَبِ‏.‏ وَأَمَّا مَنْ قَالَ مُطِرْنَا بِنَجْمِ كَذَا‏.‏ فَهْوَ مُؤْمِنٌ بِالْكَوْكَبِ، كَافِرٌ بِي ‏"‏‏.‏

Narrated Ka`b bin Ujra

That Allah's Messenger (ﷺ) saw him with the lice falling (from his head) on his face. Allah's Messenger (ﷺ) said, "Are your lice troubling you? Ka`b said, "Yes." Allah's Messenger (ﷺ) thus ordered him to shave his head while he was at Al-Hudaibiya. Up to then there was no indication that all of them would finish their state of Ihram and they hoped that they would enter Mecca. Then the order of Al-Fidya was revealed, so Allah's Messenger (ﷺ) ordered Ka`b to feed six poor persons with one Faraq of food or slaughter a sheep or fast for three days.