Does not he only pray Jumu'ah

 My father attends to prayer in a mosque and sometimes pray at home. The brother does not pray in the mosque except the Friday prayers, had tried to father repeatedly advised him but to no avail, when asked him why he says that the mosque does not like has been the regular in prayer when he was interrupted suddenly and my father tried to convince him gentle persuasion did not work then began Ptobejh The boycott is Now angry with him as it deprived him of many things, but with that useless How can I advise my father?
A: I think that what your father is true;
but should know the real reason behind your brother a break from the mosque,
Perhaps linked to the company of bad; was also the need to be saved from them and repelled by them quickly, and God knows best.