Hadith on Martyrdom: Defending your life, property from aggression

Abu Huraira reported: A man came to the Messenger of Allah, peace and blessings be upon him, and he said, “O Messenger of Allah, what do you think if a man intends to seize my wealth?” The Prophet said, “Do not give up your wealth.” The man said, “What if he fights me?” The Prophet said, “Then fight him.” The man said, “What if he kills me?” The Prophet said, “You will be a martyr.” The man said, “What if I kill him?” The Prophet said, “He will be in the Hellfire.”

Source: Ṣaḥīḥ Muslim 140

Grade: Sahih (authentic) according to Muslim

عَنْ أَبِي هُرَيْرَةَ قَالَ جَاءَ رَجُلٌ إِلَى رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ يَا رَسُولَ اللَّهِ أَرَأَيْتَ إِنْ جَاءَ رَجُلٌ يُرِيدُ أَخْذَ مَالِي قَالَ فَلَا تُعْطِهِ مَالَكَ قَالَ أَرَأَيْتَ إِنْ قَاتَلَنِي قَالَ قَاتِلْهُ قَالَ أَرَأَيْتَ إِنْ قَتَلَنِي قَالَ فَأَنْتَ شَهِيدٌ قَالَ أَرَأَيْتَ إِنْ قَتَلْتُهُ قَالَ هُوَ فِي النَّارِ

140 صحيح مسلم كتاب الإيمان باب الدليل على أن من قصد أخذ مال غيره بغير حق كان القاصد مهدر الدم في حقه