What is the basis for your prohibition of smoking?

The Shaykh : We derived the ruling from a very strong basis and declared smoking forbidden, even though there is no explicit text prohibiting it. However, if the Messenger of Allah (peace and blessings be upon him) forbade and prohibited it explicitly, a Muslim who has eaten from this foul tree is forbidden from going to perform the obligatory prayer, which is an individual obligation for him to perform in the mosque. Do not go, because you are harming the believers. It is like the one who smokes day and night; the smell of the tobacco becomes attached to him and stays with him. I know some of my relatives; when I was sitting in the library, the first thing that would knock on the door, I would say, "This is a smoker," and immediately he would blast me with what? With his foul smell. This is harm. And there is a great difference between temporary harm and continuous harm. It is like a porcupine with thorns on all sides; wherever he sits, whether it is food, drink, prayer, or the stairs, and so on, whereas this person only goes to prayer.