Q: If a person does not attend Juma salah, is his income halaal?
A: Presumably you are referring to one who trades during the time of Jumu’ah and thus misses his Jumu’ah. If this is so then know that one who misses Jumu’ah has committed a major sin. According to some Ulema a male who misses three Juma’s in a row for no valid reason, loses his iemaan. Though his income will be halaal, there is no blessing and good luck in such an income. It is devoid of barakaat, and such a business is doomed to failure.