The Ruling on Eating Stolen Food

Question :

My father works in a restaurant and the owner of this restaurant is stingy. My father, in collusion with (other) workers in the restaurant, takes some food without the knowledge of the owner of the establishment. My father brings home about three kilograms of meat every week, without the owner of the establishment's knowledge. I asked him: "Why do you do this, father?" And he said to me: "Because the owner of the establishment is a miser and he does not favor us with anything." And I am a student, still studying. May I eat from this food, or is it forbidden, bearing in mind that this food remains in the house for about four days and we do not eat anything else?

Answer:

It is not permissible for you to eat from food that your father secretly takes from the restaurant without the knowledge of the restaurant's owner. It does not matter that the owner of the restaurant is stingy. A worker has no right except to take the payment that is lawfully his, according to the saying of the Prophet ﷺ:
"All of the Muslim is forbidden to the Muslim; his property, his blood and his honor."

And may peace and blessings be upon our Prophet, Muhammad

and upon his family and Companions.

Source:
Fatawa Islamiyah, Vol. 6 Pages 351