The Forty Hadiths of al-Nawawi On the authority of Ibn Mas'ud, may Allah be pleased with him, who said: The Messenger of Allah, peace and blessings of Allah be upon him, said: "The blood of a Muslim man is not lawful except in one of three cases: A previously married adulterer, A life for a life, And the one who abandons his religion and separates from the community." Narrated by al-Bukhari and Muslim. This hadith clarifies the immense sanctity of life in Islam, And that the fundamental principle is the preservation and protection of human life. Thus, the blood of a Muslim is not made lawful except in specific cases, Which the Sacred Law has defined with justice and wisdom. The hadith affirms that Islam is a religion that establishes security and stability, Prevents chaos and aggression, And makes the preservation of rights and lives one of its greatest objectives.