Q: As I understand it, there are debates between medical researchers whether marijuana actually intoxicates the body or not. So how can we put such a thing under the topic of intoxication if it hasn’t been proven to intoxicate the body?
A: Sayyidina Waa’il ibni Hajar (Radhiyallaahu Anhu) narrates that Rasulullah (Sallallaahu Alayhi wa Sallam) said: Every intoxicant is Haraam. (Shu’abul Imaan V2 P160). This will include intoxicants in all forms; whether alcohol, marijuana, drugs, etc, and irrespective of the amount consumed and >whether it intoxicates that particular person or not. Consuming an intoxicant is Haraam. The Haraam factor is not based on whether the person becomes intoxicated or not.
Allah Ta’aala knows best
Moulana Yusuf Laher
Mufti Siraj Desai adds: Dear brother: There is overwhelming scientific evidence that marijuana intoxicates. I know of no debate to the contrary. Furthermore, the physical results that can be seen in the behaviour of a person who has smoked marijuana leaves us in no doubt as to the intoxicating effects of this drug. For a Shar’ee ruling, this is enough.