The Ruling on Fat Which is on the Hands and on the Dishes

Question :

Is it permissible for the owner r of the house to place one drain in his house to which all of the washing goes, since included in that is the washing of food vessels and the washing of hands after finishing a meal?

Answer:

There is no sin in placing a drain for washing of dishes and hands after eating with other waste, because the fat which is on the hands and dishes is not food. But as for bread, meats and all kinds of food, it is not permissible to throw them in the drains. Rather, they must be sent to those who are in need of them, or they must be placed in a clear place where it is not abused, in the hope that someone will take them for their animals, or that the animals and birds will eat from them. It is not permissible to put them in the garbage, nor in rubbish dumps, nor in the road, because that would entail abuse of it and placing it in the road is an abuse and harmful to those who use the road.

Source:
Ibn Baz
Fatawa Islamiyah, Vol. 6 Page 360

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