How should the Sunnah ceremony be when opening a new Musjid?

Answer

There is no ceremony when opening a Musjid. Opening ceremonies are practices of the kuffaar. They are furthermore, practices of ostentation (riya) pride (takabbur) and waste (israaf). A Musjid's only opening 'ceremony' is the Athaan and the Salaat, nothing more.

Now, the son , after his mother had passed away, is telling the father to vacate the house and find some other place, and is also not giving any money or compensation, towards his investment. Appreciate your comments.

A. According to the Shariah, the house remains the property of the father. His signature whilst he was bed-ridden in hospital is not valid. Either the son is no longer a Muslim, or his Imaan is at the point of elimination. He is a veritable Iblees. It is possible that he may die without Imaan if he maintains his current haraam and satanic stance towards his father. This son is a brutal devil. Such behaviour is not expected of even illegitimate children.