'Abdullah bin 'Umar narrated that The Messenger of Allah (ﷺ) said:
"He who is killed while defending his property is considered a martyr." Related by Abu Dawud An-Nasa'i and At-Tirmidhi who graded it as Sahih. (PT)
English reference (PT): Book 9, Hadith 1237 (PT)
Arabic reference (PT): Book 9, Hadith 1209 (PT)