What is the ruling on a father forcing his adult son to work while he is still studying, depriving him of the money necessary for his studies?

If the father wants his son to work, the son must obey him and show him righteousness if he is capable of earning a living. The father is not obligated to financially support an adult son who is capable of earning. It is advised to seek employment that allows for the completion of studies at night or through distance learning.