slam alikom,
there is no prove that EL masoudi was shie or sunni, he athered the history as he heard it, there are so many Hadieth shareef which also say some things in the same regard so please use the book as you use all the books with caution but do not say sunni or shai this will kill so many true stories in the book as will, and this apply even in the sehah and all the books written at that time.