Looks like Bohra religion has cast system. Kothar is Brahmin.profastian
The measurement is very simple. It depends on the number of books one has read. The books are categorized in a hierarchy. Even the Jamia Ustaads don't have raza to read some books. Similarly, there are some books which only the DAI can read. The Shahdazas (not all)have read some books which even the ustaads aren't allowed to, hence they are higher in rank.
There are secrete books and some books only chief can read!!!!!
Why does he need to read books. Does't he get knowledge by Ilham?
My goodness how stupid and gullable this people are?