(Quran...
(Quran, 17:31) Another issue is that if there are some accomplices who conspire and commit a murder together, this does not alleviate or lessen the burden of the crime or the sin of the killers. The Prophet of Islam (S) said: "Cooperation in killing no matter to what extent will cause disappointment and distance from God's mercy on the Resurrection Day."[^3] Once, during the Prophet's time, a man was killed in the city of Medina by a group of people.
No certain individual was identified as the killer. So as soon as the Prophet (S) heard the news, he rushed to the mosque to speak and announced: "If all the residents of Heaven and Earth participate in killing a human, they will all suffer punishment.”[^4] Also forbidding murder and depriving a person of life, is not exclusively allocated to Muslims, but anyone living under the umbrella of an Islamic government enjoys this right, but as long as they do not intend to overthrow the Islamic state to fight against it.
Thus, their blood, property and lives will benefit from this sanctity and thus, will benefit from the Islamic state's protection. Thus, the Prophet (S) said: "God will forbid (going to) the Heaven for he who kills a sinner."[^5] The Islamic ruling against murder is so strict that even if someone gives shelter to a murderer, he will face strict and severe blame.
The Prophet (S) said: "He who gives shelter to a killer or someone who causes or paves the way for a murder, he will be condemned by God.”[^6] This point is also remarkably important in regards to depriving others of their lives: in the Islamic law reluctance or compulsion does not justify the act of murder. Therefore if someone is threatened to be killed should he refuses to commit a murder, his crime is not justifiable.
The threatened person has no right to kill another person, just to rescue himself from death, as the value of all men is the same and has sanctity.
But the opposite is better, as the Prophet (S) was quoted as saying: "If you are in a situation where you can prevent a believer, who says his prayer, from being killed by you (otherwise you would lose your life), you must prefer to be killed than commit this crime."[^7] As repeatedly seen in the history of the holy wars at the advent of Islam, some self-sacrificing men during the war sacrificed their own lives by giving their very last date to their comrades in the warfront who were starving to death to rescue them.
Thus they were honored to be martyrs.