(37) The Book of Fighting [The Prohibition of Bloodshed]
كتاب تحريم الدم
(22) Chapter: The One Who is Killed Defending His Wealth
(22) باب مَنْ قُتِلَ دُونَ مَالِهِ ‏‏
Sunan an-Nasa'i 4090 
It was narrated from Sa'eed bin Zaid that:
The Prophet [SAW] said: "Whoever is killed defending his wealth, he is a martyr." This is an abridgement of it.
أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، وَقُتَيْبَةُ، - وَاللَّفْظُ لإِسْحَاقَ - قَالاَ أَنْبَأَنَا سُفْيَانُ، عَنِ الزُّهْرِيِّ، عَنْ طَلْحَةَ بْنِ عَبْدِ اللَّهِ بْنِ عَوْفٍ، عَنْ سَعِيدِ بْنِ زَيْدٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏ "‏ مَنْ قُتِلَ دُونَ مَالِهِ فَهُوَ شَهِيدٌ ‏"‏ ‏.‏
Grade :  Sahih (Darussalam)
Reference : Sunan an-Nasa'i 4090
In-book reference : Book 37, Hadith 125
English translation : Vol. 5, Book 37, Hadith 4095