Is it permissible to secretly visit relatives without one's father knowing?

Obeying one's parents in what is good is obligatory, and disobeying them is a grave sin. If a father forbids visiting relatives for an acceptable reason, then visiting them is not permissible. However, if the prohibition is without a legitimate reason, then the father should not be obeyed, because maintaining kinship ties is obligatory. One must visit them secretly, as long as no harm results, while also observing filial piety towards the father and advising him.