A muslim cannot marry a mushrik. and no one except scholars decide to give takfeer to anyone and they do it only after ensuring that all signs of shirk and kufr are found in the person and he is aware of his beliefs and acts and that all conditions are fulfilled and there are no obstacles.

I wanted to ask that what are the signs of a mushrik? Can we call a Muslim person mushrik..if we see those signs in him? Is it allowed for a Ahle tauheed ( believer of tauheed) to marry a mushrik (though their beliefs are not correct but they are Muslim? ??

Shirk and its different forms | November 11, 2015 3:28 am
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My sister is going through some illness…and my brother in law hanging amulets or some pieces of wood on my sisters hand..and i know its completely shirk…so if take a stand to remove that amulets knowing the couple will have chaos later on this issue…wht should i do in this case…i tried to make them understand..but they dont…wht should i do in this situation.
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A person is learning Arabic language in order to comprehend islam in a more better way which I believe would be considered as an ibadah but if that person does show off to people that he knows arabic, due to that intention of learning Arabic, this act has now become a worship,in this case, if he does show off to people that he knows arabic language, will it be riyaa which is minor shirk?