The Ruling on Transferring the Funds of One Mosque to Another

Question :

There is a mosque in the United States of America for which money was collected and then it was built, after which there remained a large amount from its funds and in another area, there is a mosque around which there lives a large Islamic community and it requires the building of a library and a school and some subsidiary buildings. Some of those who are undertaking it wish to take something from the funds which are present with the people who built the first mosque. The people of the first mosque object, arguing that the funds belong to the first mosque and they say that if Shaikh Abdul-'Aziz bin Baz rules that it is permissible to transfer funds from that mosque to this, then we will not object to it. We request you to advise us on this.

Answer:

If the first mosque for which funds were collected has been completed and is in no need of the money, then the excess funds may be used for the building project of the second mosque, including its additional buildings, such as libraries, toilets and the like, as the scholars have stipulated in the chapters on endowments. Since it falls into the same category as the mosque for which charity was given, and it is well known that those who give charity did so with the intention of sharing in building one of the Houses of Allah, so what remains from it may be used for something the same. If there is no mosque which requires the expenditure of these extra funds, it may be utilized for the benefit of the general Muslim populace, such as schools, hospices, charities for the poor and such like. And Allah is the Granter of success.

Source:
Ibn Baz
Fatawa Islamiyah, Vol. 5 Pages 45-46