Haram
Alcoholic intoxicants are prohibited in Islam. Khamr is the Arabic word for alcoholic drinks that cause intoxication. The Prophet declared that the prohibition was not only placed on wine, but the prohibition also included beer and other alcoholic beverages that intoxicate a person. The Prophet also forbade the trading of these intoxicants, even with non-Muslims. It is not permissible for a Muslim to import or export alcoholic beverages, or to work in or own a place that sells these intoxicants. Giving intoxicants as a gift is also considered haram.
Ritual purity in Islam
The mixed views on the subject came about because tobacco had not been introduced to Arabia at the time when the Quran was written in the 7th century CE. Therefore, one cannot find a verse of Quran or words of Muhammad saying clearly that "Smoking is forbidden." However, there are many instances where the Quran gives general guidelines, and calls upon Muslims to use their reason and intelligence, and seek guidance from Allah about what is right and wrong. It is universally understood that smoking causes a number of health problems that often ultimately result in death: smoking is, depending on the madhhab, considered to be either makruh or haram, but in Sunni madhhabs it is not considered to cause one to lose ritual purity.