Is the father's statement to his wife, "If this matter is what will separate us, then let it separate us," an allusion to divorce? And is a son considered disobedient to his parents for raising his voice at them in anger? And how can a son deal with his father who is negligent in prayer, denies matters known to be essential to the religion, and believes in superstitions?

The aforementioned statement is a figurative expression of divorce, and it takes effect if the speaker intends divorce, unless the father is in a state of anger where he cannot discern, in which case it does not take effect. A son raising his voice at his parents is not permissible, but it is not considered disobedience (uquq) if he is generally dutiful towards them. Allah will forgive him if he repents, as Allah the Almighty says: "Your Lord is most knowing of what is within yourselves. If you should be righteous, then indeed He is ever Foriving to the often returning [to Him]." However, if he is constantly abusive, then it is considered disobedience (uquq). The son's duty regarding the father's negligence in prayer and sins is to advise him gently, wisely, and kindly, and to seek help from trustworthy scholars. He should obey his father in matters that are not sinful and accompany him in kindness, even if the father persists in his state, as Allah the Almighty says: "But if they endeavor to make you associate with Me that of which you have no knowledge, do not obey them but accompany them in [this] world with appropriate kindness."