Lol this question is nuts of course muslims can use bitcoin too my friend from other country which his job is to hack websites and report the vulnerables and then after he report that he gets bounty which they pay him bitcoin and he sells that to me and i will pay him dollar afterwards theres no wrong using bitcoin , bitcoin is not a religion bitcoin can use everyone who wants to use it why they need to dis allowed that when they knew that bitcoin can helps to less hassle to settle those payments quickly.