The name of a book that explains about the angels, and a book from which we learn about the misguided sects.
That is, knowledge of the angels in detail, perhaps one of the books that details the topic of the world of the righteous angels.
By Dr. Umar al-Ashqar, may Allah have mercy on him, a good book.
It is about the world of angels in general, and he is careful to use authentic narrations, and it is a good book about the angels, Dr. Umar al-Ashqar, may Allah have mercy on him.
A book from which we learn about the misguided sects.
There are many books about the sects, there is a recent book by the shaykh.
Nasir al-Qafari, al-Firaq.
Islamic, there are many books on sects, like "al-Farq bayn al-Firaq" by Abd al-Qahir al-Baghdadi, and "Maqalat al-Islamiyyin".
By Abu al-Hasan al-Ash'ari, there are indeed many books about sects.