The Houses That The Angels Do Not Enter

This is a book about the angels. It tells us about them,
everything an inquisitive mind might like to  
know. The book invites us to become their companions. They are an
innocent creation of Allah, who worship him day and night and obey all His
commands without the least demur. Their duties differ as do the   kind of worship they engage in. In its few
pages, it compresses a lot of information about the angels. Naturally, by
knowing many things in it, we may correct our lives to be able to receive their
prayers and intercession and to protect ourselves from being those whose houses
the angels do not enter.