Sahih al-Bukhari 4286
Narrated Anas bin Malik:
On the day of the Conquest, the Prophet (ﷺ) entered Mecca, wearing a helmet on his head. When he took 
it off, a man came and said, "Ibn Khatal is clinging to the curtain of the Ka`ba." The Prophet (ﷺ) said, 
"Kill him." (Malik a sub-narrator said, "On that day the Prophet (ﷺ) was not in a state of Ihram as it 
appeared to us, and Allah knows better.")
حَدَّثَنَا يَحْيَى بْنُ قَزَعَةَ، حَدَّثَنَا مَالِكٌ، عَنِ ابْنِ شِهَابٍ، عَنْ أَنَسِ بْنِ مَالِكٍ ـ رضى الله عنه ـ أَنَّ النَّبِيَّ صلى الله عليه وسلم دَخَلَ مَكَّةَ يَوْمَ الْفَتْحِ وَعَلَى رَأْسِهِ الْمِغْفَرُ، فَلَمَّا نَزَعَهُ جَاءَ رَجُلٌ فَقَالَ ابْنُ خَطَلٍ مُتَعَلِّقٌ بِأَسْتَارِ الْكَعْبَةِ‏.‏ فَقَالَ ‏
"‏ اقْتُلْهُ ‏"‏ قَالَ مَالِكٌ وَلَمْ يَكُنِ النَّبِيُّ صلى الله عليه وسلم فِيمَا نُرَى وَاللَّهُ أَعْلَمُ يَوْمَئِذٍ مُحْرِمًا‏.‏