He has brothers and relatives who do not pray; should he cut them off?

Q: A question from: M. H - UAE - Abu Dhabi, who says: I have brothers and relatives, but unfortunately, they do not pray and do not uphold the limits of Allah. Should I cut them off and leave off enjoining good and forbidding evil? They mock me and ridicule me, saying, "Do you want to reform all the people?" They have come to dislike sitting with me and have cut me off. What should I do regarding them?

A: It is prescribed for you to boycott them and cut them off as long as they do not accept the advice and remain in the state you described, which is abandoning prayer and distancing themselves from good. You should boycott them and cut them off until Allah guides them. This is what is prescribed for you; indeed, this is a confirmed Sunnah.
Some scholars hold that this is obligatory due to their misguidance and their distancing from good. However, if you contact them occasionally, hoping that Allah will guide them through calling, guidance, and instruction, there is no harm. The Prophet (peace and blessings be upon him) boycotted three of the Companions when they left the expedition with him without an excuse.
In conclusion: It is prescribed to boycott these people, and at the very least, boycotting them is a confirmed Sunnah, until Allah guides them and returns them to the right path. We ask Allah for guidance and success for us and for them.