Answer:
(Fatwa: 1109/1109=M/1430)
Marijuana (ganja) is an intoxicant item and Shariah disallows every intoxicant: کل مسکر حرام
It is forbidden to even go nearer to Salah in the state of intoxication, as the Quran says: لا تقربوا الصلاۃ وانتم سکاری
What you have heard about alcohol is right. This Hadith is mentioned in Tirmizi, Nasai etc. There is no narration particularly about marijuana.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
