Husband Smoking Marijuana

Q: What's the faith of a woman who distances herself from a husband who smokes marijuana?

A: A wife has to remain fatihful towards her husband as long as she is married to him. She has to continue to fulfill the rights of the marriage as commanded by Shariah. Therefore, even if the husband is onto drugs or marijuana, she has to still maintain his rights. Perhaps the husband needs help to overcome this problem. The wife could provide some assistance. However, if this habit of the husband causes him to continuously break her rights and not fulfill marital dues, then the wife may seek a divorce or annulment. But that must be determined by local Ulema who will study and judge the case on its merits.
If by "distancing" you mean that the wife remains in nikah but keeps aloof from her husband, then although this is permissible, but she still has to fulfill the rights of nikah. If him being in that state causes grief and anguish to the wife during sexual relations, then she is allowed not to allow him access to her body while he is under the influence of marijuana.

And Allah knows best.

I suggest a couple facing this problem go to local Ulema for counselling and help. May Allah bring about a cure to this evil, aameen.