(24) The Book of Hajj
كتاب مناسك الحج
(107) Chapter: Entering Makkah Without Ihram
(107) باب دُخُولِ مَكَّةَ بِغَيْرِ إِحْرَامٍ
Sunan an-Nasa'i 2867 
It was narrated from Ansas that the Prophet entered Makkah wearing a helmet. It was said that Ibn Katal was haging on to the drapes of the Kabah and he said:
"Kill him."
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا مَالِكٌ، عَنِ ابْنِ شِهَابٍ، عَنْ أَنَسٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم دَخَلَ مَكَّةَ وَعَلَيْهِ الْمِغْفَرُ فَقِيلَ ابْنُ خَطَلٍ مُتَعَلِّقٌ بِأَسْتَارِ الْكَعْبَةِ ‏.‏ فَقَالَ ‏ "‏ اقْتُلُوهُ ‏"‏ ‏.‏
Grade :  Sahih (Darussalam)
Reference : Sunan an-Nasa'i 2867
In-book reference : Book 24, Hadith 250
English translation : Vol. 3, Book 24, Hadith 2870