What is the ruling of Islamic law concerning dealing with a father who does not pray, who divorced his wife three times, then tried to harm and stab his son with a knife, and then falsely accused him to the police, knowing that the son drinks alcohol and uses hashish, and that his mother was ill before her death?

The issue of one who abandons prayer out of laziness is subject to differing opinions regarding their disbelief. If a father prohibits his wife three separate times, a major, irrevocable divorce (baynunah kubra) ensues if he intended divorce. If he says to her, "You are unlawful," it is considered according to his intention. Disobeying one's parents is among the gravest of major sins, and one must accompany them with kindness, even if they are abusive. Drinking alcohol and consuming hashish are major sins. The statement, "The inauspicious day has come," is a form of reviling time, which is forbidden. One must hasten to repent from all sins.