Sayyiduna Ali (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) said: The blood of all believers is equal; even the lowest-ranking believer can grant protection. They are all like one hand against those outside their community. Beware! A believer will not be killed in retaliation for a disbeliever, nor will a dhimmi be killed during the period of his covenant.