Jabir ibn Sulaym said: The Messenger of Allah said to me: “Beware of wearing one's lower garment below the ankles, because this is a kind of showing-off, and Allah does not love showing-off.”

Smoking is an evil and it is not permissible to indulge in it, or buy and sell it, or even to offer it to others.

Masturbation (for both men and women) is haram (forbidden) in Islam based on evidence from the Quran and the Sunnah. See the detailed answer for 13 tips on how to give up masturbation.