All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
The mosque is of great status in Islam as it is the place of establishing the prayer and giving lectures and circles for the students of knowledge. It is also the place where the Muslims discuss their worldly matters as well as the matters pertaining to their Hereafter. The mosque was a place of leadership of Muslims at the time of the Prophet and his rightly guided companions and at the golden ages of Islam. As long as the mosque is built and people are permitted to perform the prayer in it, the mosque becomes an endowment for Allaah. Allaah Says (what means): {And the mosques are for Allaah (Alone), so invoke not anyone along with Allaah.}[Quran 72:18] Therefore, the mosque is not a property of someone, but it is permissible to attribute it to a Muslim person, or a given body, nationality or tribe, because of their being in charge of building it, making it an endowment and so forth. However, it is not appropriate for an Islamic body or any Muslim individuals to monopolize the mosque and prevent others from calling to Allaah in it. Therefore, you should advise the committee who are running the mosque to do their duty of calling to Allaah, and share the administration of the mosque with other Muslims in what benefits all the Muslims in that country.
On the other hand, it is not a condition for the Friday speech to be in Arabic as we clarified in Fatwa 81486, but it should be in the language of the majority of the congregation as established by the Islamic Fiqh committee.
Allaah Knows best.