Sa'id bin Zayd (may Allah be pleased with him) said that the Prophet (peace and blessings be upon him) said: "Whoever is killed protecting his wealth is a martyr, and whoever is killed protecting his family and his religion is also a martyr."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الأشربة والحد فيها / 17633
Abdullah bin Amr bin al-As (may Allah be pleased with them both) said: I heard the Messenger of Allah (peace and blessings be upon him); he said: "Whoever is killed wrongfully while protecting his wealth is among the people of Paradise."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الأشربة والحد فيها / 17634
Sayyiduna Abu Hurayrah (may Allah be pleased with him) said: A man came to the Prophet (peace and blessings be upon him) and said: O Messenger of Allah! What if someone tries to snatch my wealth from me? He said: "Do not give it to him." He said: What if he fights me? He said: "Then fight him too." He said: What if he kills me? He said: "Then you will be a martyr." He said: What if I kill him? He said: "He is in Hell." (Without the story.)
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الأشربة والحد فيها / 17637
Qabus bin Mukhariq narrates from his father (may Allah be pleased with him) that a man came to the Prophet (peace and blessings be upon him) and said: O Messenger of Allah! What if someone wants to seize my wealth? He (peace and blessings be upon him) said: "Adjure him by Allah." He said: What if he does not heed the oath? He (peace and blessings be upon him) said: "Seek help from the Muslims." He said: O Prophet of Allah, what if there is no Muslim to help either? He (peace and blessings be upon him) said: "Seek help from the ruler." He said: What if there is no ruler either? He (peace and blessings be upon him) said: "Fight him; if you are killed you will be a martyr, otherwise you will save your wealth."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الأشربة والحد فيها / 17638
Sayyiduna Quhayd al-Ghifari (may Allah be pleased with him) said: Someone asked the Prophet (peace and blessings be upon him): O Messenger of Allah! What if an aggressor attacks me and plunders my wealth? He (peace and blessings be upon him) said: "Adjure him by Allah three times and remind him of Allah. If he refuses, fight him; if you are killed, you are a martyr, and if he is killed, he will be in Hell."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الأشربة والحد فيها / 17639
The previous narration is also reported from Sayyiduna Abu Hurayrah (may Allah be pleased with him).
This is how I found it; the correct chain is: from Ibn al-Had, from Amr bin Abi Amr, from Quhayd.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الأشربة والحد فيها / 17640