What is the ruling on taking a mushaf from the mushafs in the mosque?

Question:
In the year 1408, my father went to pray with the imam of the mosque, accompanied by my brother, who was eight years old at the time. The mosque was far from us, not extremely far, but far enough. I told my brother, "If you go with my father, bring me a mushaf from the mosque's mushafs." I did not know at the time that it is not permissible to take anything from the mosque without the owner's permission. I have been reading from this mushaf in school, at home, and during Ramadan, and I have given it to anyone who wants to read from it. It is with me now, and I am still reading from it. The owner of that mosque has built a new mosque near us. Can I return that mushaf to the new mosque, or is it obligatory for me to return it, or is it obligatory for me to return it to wherever it is? Please guide us. May Allah reward you with good.

Answer:
First, we ask Allah, Glorified and Exalted is He, to love you as you have loved us in Him. We also ask Allah, Mighty and Majestic, to increase your love for good and your turning to the pursuit of beneficial knowledge.
As for what you mentioned in your question about taking the mushaf from the mosque, this is not permissible. The mushafs in the mosque are dedicated to it; they are an endowment (waqf) for it, and it is not permissible to move them from it. You must return this mushaf to the mosque from which it was taken, so that your conscience is clear, if Allah wills, and you do not return to such an action. By the way, we advise our brothers—perhaps they do not realize this—that the mushafs in mosques and the books in mosques are endowments for them, and it is not permissible to take them from there, because moving them changes the endowment from its designated place. Therefore, whoever takes something from a mosque must return it to it and seek forgiveness from Allah, Mighty and Majestic. May Allah reward you with good.