Shedding blood unlawfully is one of the greatest sins with which a person could meet Allah (may He be exalted), and Allah (may He be glorified and exalted) has warned the one who kills a Muslim unlawfully of a lasting punishment. That is why a group of the companions of the Prophet (blessings and peace of Allah be upon him) stayed away from the turmoil (fitnah) that occurred after the murder of ‘Uthmaan ibn ‘Affan (may Allah be pleased with him) for fear of playing any part in the shedding of blood unlawfully, which Allah (may He be exalted) would question them about on the Day of Resurrection. One of those who stayed away from fighting was Abu Bakrah Nufay‘ ibn al-Harith (may Allah be pleased with him). According to this hadith, when Abu Bakrah (may Allah be pleased with him) saw al-Ahnaf ibn Qays going to join the fighting, he said to him: Where are you going? He said To support this man, referring to ‘Ali ibn Abi Talib (may Allah be pleased with him) in the Battle of the Camel, which took place in 36 AH. This was a battle which led to a great deal of turmoil; it took place in Basra between ‘Ali (may Allah be pleased with him) and his supporters on the one hand, and al-Zubayr, Talhah and ‘A’ishah (may Allah be pleased with them) and their supporters on the other hand. ‘A’ishah (may Allah be pleased with her) had gone there to try to bring about reconciliation, not to fight, then matters got out of hand and there happened what happened. Abu Bakrah (may Allah be pleased with him) told al-Ahnaf to go back, then he told him that he had heard the Messenger of Allah (blessings and peace of Allah be upon him) say: If two Muslims meet and fight with their swords for worldly gain, or without any legitimate justification according to Islamic teachings, then the killer and the slain both deserve to enter Hell. Abu Bakrah (may Allah be pleased with him) asked, seeking to understand: ‘O Messenger of Allah, the case of the killer [is clear], but what about the one who was slain?’ In other words: why would he enter the Fire even though he is the one who was killed? The Prophet (blessings and peace of Allah be upon him) answered him by saying: “He was keen to kill his opposite number.” He wanted to kill his opposite number, and if he had had the opportunity to kill him, he would have done so. This does not include a Muslim who fights off another Muslim who is attacking him, for he should fight to protect his wealth or honour, even if he kills or is killed. The fact that both of them will be in the Fire does not mean that they will abide therein forever. Rather this is a punishment for this sin, then it is up to Allah (may He be exalted): if He wills, He will punish them then bring them out of the Fire like others who affirm His oneness (but commit sins), and if He wills He will pardon them and not punish them at all. Remaining in Hell forever is only for one who regards it as permissible to kill a fellow Muslim. This hadith indicates that for a Muslim to fight his fellow Muslim for no legitimate reason is a major sin, and that the one who commits a major sin does not become a disbeliever thereby, because the Prophet (blessings and peace of Allah be upon him) described both fighting parties as Muslims. .