From the books of criticism: The rules of poetry by Ahmed bin Yahya, known as Abu Al -Abbas, a fox, 291 AH, Abu Al -Abbas made his book his book includes rhetorical and critical rules and what was famous in his era from dividing poetry into a promise and methods, as a result of some divisions of grammatical. The poetic rules that were exposed to it according to his claim is only four, and if we look at these four rules, we will find them to divide grammar closer to the division of poetry.