Permissibility of a father compensating his son for the land he took to dedicate as Waqf
I had a piece of land and one of my children also had a piece of land. I took the land (Part No. 16; Page No. 228) of my son and handed it over to the ministry of Awqaf (endowments)
because it is located in a suitable place for building a Masjid (mosque). Someone undertook the responsibility to build it and I helped him with a small amount of money. However, until now I did not give my son the piece of land which I intended to give him in return for the piece of land which I took. Is this permissible? Would it be permissible if I give him the value of the land which the benefactors built as a Masjid without giving him the piece of land?
It is permissible for you to dispose of the piece of land owned by your son and give it to the Ministry of Awqaf. However, you have to compensate him with a piece of land or its value. There is no preference for him over his siblings because it is in return for his piece of land of which you disposed. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.