Second Reflection
There is no doubt among Muslims—and indeed among all rational people—that one of the most important principles Islam lays down and stresses is the preservation of human life. Hence it forbids taking a life without just cause. Allah, Exalted is He, says: “Do not kill the soul which Allah has made sacred except with right” (al-An‘am 6:151).
He has also counted the destruction of crops and livestock among the gravest forms of corruption on earth: “When he turns away, he strives throughout the land to spread corruption therein and to destroy crops and progeny; and Allah does not love corruption” (al-Baqarah 2:205).
Furthermore, He decreed that killing a single person unjustly is tantamount to killing all humankind: “For that reason We ordained for the Children of Israel that whoever kills a soul—unless it be in retaliation for a soul or for spreading corruption in the land—is as though he has slain all mankind; and whoever saves a life, it is as though he has saved all mankind” (al-Ma’idah 5:32).
Therefore, the shedding of innocent blood, the killing of those who do not deserve to be killed, and fighting them are unequivocally condemned by both the sacred law and sound reason.