He Hit His Father Who Was Drunk

Question :

The father-a drunkard - began to beat his wife while he was drunk. The questioner, who is their son, beat his father to save his mother from the attack. In the end, the father kicked them both out of the house. The questioner asks: What is the ruling for what I did and will Allâh Almighty punish me for it?

Answer:

To answer this question, I must address the father first, A and then the son. As for the father, you must abandon. drinking, because it is from the major sins. The Messenger of Allah ﷺ cursed the drinker of alcohol and Allah Almighty said:
"O you who believe! Intoxicants (and all kinds of alcoholic drinks), gambling, Al-Ansab (stone alters for the sacrifice of animals), and Al-Azlam (arrows for seeking luck or decision) are an abomination of Shaytan's handiwork. So avoid (strictly all) that (abominaion) in order that you may be successful. Shaytan wants only to excite enmity and hatred between you with intoxicants (alcoholic drinks) and gambling, and hinder you from the remembrance of Allah and from the Salah. So, will you not then abstain? And obey Allah and the Messenger, and beware and fear Allah. Then if you turn away, you should know that it is Our Messenger's duty to convey (the Message) in the clearest way."

Drinking alcohol is also detrimental to your physical and mental health. So I advise you to repent to Allah, to abandon your drinking before death overtakes you, a time when you will really regret your drinking, a time when it is too late for regret.

As for the son: There is nothing wrong with what you did to save your mother. However, if it is possible in such a situation to restrain the father from beating the mother without hitting, then the son is not allowed to hit him. But if the situation can only be remedied through physical force, then there is no choice but to use it.

Source:
Ibn 'Uthaimin
Fatawa Islamiyah, Vol. 7 Pages 305-306