The questioner asked Imaam Muhammad Bin Saaleh Al-Uthaymeen (rahimahullaah) whether a person who died due to smoking is considered to have committed suicide! So the Shaikh (rahimahullaah) asked the questioner: ‘’Do you think that the smoker smokes in order to die?’’ The questioner said: ‘’No’’. The Shaikh (rahumahullaah) said to the questioner: ‘’Therefore, he is not one who has committed suicide. There is a difference between the one who intends to kill himself and the one who does not intend to do so. However, when it is the case that the harm of smoking leads to death, then this the strongest proof that smoking is haraam and I have no doubt that it is haraam, due to the harm it causes to the body, wealth and the manners of a person. Do you not know that the smoker may compromise his honour if he cannot find cigarettes?! Anyway, we do not doubt that smoking is haraam, but we do not say that the smoker is one who has killed himself (i.e. suicide) because he does not intend to kill himself.
[Paraphrased….listen to audio: