Encyclopedia of Prophetic Hadiths

A man came to the Messenger of Allah (may Allah's peace and blessings be upon him) and said: O Messenger of Allah, what if a man comes to me wanting to take my money? He said: "Then do not give him your money." The man said: What if he fights with me? He said: "Then fight with him." The man said: What if he kills me? He said: "Then, you would be a martyr." The man said: What if I kill him? He said: "He would be in Hellfire."

“Avoid the seven destructive sins” They said: “O Messenger of Allah, what are they?” He said: “Associating partners with Allah; magic (sorcery); killing a person whose killing Allah has prohibited except by legal right; consuming usury; devouring the property of an orphan; fleeing from the battlefield; and slandering chaste, innocent, and believing women.”

"All of my Ummah may be forgiven except those who commit sin openly. One kind of committing sin openly is when one commits something during the night, then the morning comes and Allah has screened it, but he says: 'O So-and-so, last night, I did such-and-such.' Though he spent the night screened by his Lord (none knowing about his sin), in the morning he removes Allah's screen from himself."

"Whoever throws himself from a mountain and kills himself will be in Hellfire, falling down into it and abiding therein eternally forever; whoever drinks poison and kills himself will be carrying his poison in his hand and drinking it in Hellfire, wherein he will abide eternally forever; and whoever kills himself with a piece of iron will be carrying his piece of iron in his hand and stabbing his abdomen with it in Hellfire wherein he will abide eternally forever."