(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 4087 
It was narrated that 'Abudllah bin 'Amr said:
"The Messenger of Allah [SAW] said: 'Whoever is killed defending his wealth, he is a martyr.'"
أَخْبَرَنَا جَعْفَرُ بْنُ مُحَمَّدِ بْنِ الْهُذَيْلِ، قَالَ حَدَّثَنَا عَاصِمُ بْنُ يُوسُفَ، قَالَ حَدَّثَنَا سُعَيْرُ بْنُ الْخِمْسِ، عَنْ عَبْدِ اللَّهِ بْنِ الْحَسَنِ، عَنْ عِكْرِمَةَ، عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏ "‏ مَنْ قُتِلَ دُونَ مَالِهِ فَهُوَ شَهِيدٌ ‏"‏ ‏.‏
Grade :  Sahih (Darussalam)
Reference : Sunan an-Nasa'i 4087
In-book reference : Book 37, Hadith 122
English translation : Vol. 5, Book 37, Hadith 4092