Sunan an-Nasa'i 4094
سنن النسائي#4094SahihIt was narrated from Sa'eed bin Zaid that:The Prophet [SAW] said: "Whoever fights to protect his wealth and is killed, he is a martyr. Whoever fights to protect himself, he is a martyr. Whoever fights to protect his family is a martyr
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 37:129