Cleaning the mosque with a brush

Question

What is the ruling on using a brush made of hair in the mosque instead of a broom?

Answer

If it is made of pig bristles, it is impure, and bringing impurity into the mosque is prohibited. If it is made of the hair of some animal other than the pig, it is not impure, and bringing it into the mosque is not impermissible; however, if there is doubt about it, it should be left.

Source: Fatawa Mahmudiyya

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