Among the great science of Arabic is scientific (shows and rhymes), which deal with Arabic poetry in order to control its weight and achieve its rhyme, by proving what the Arabs have proven to them and deny what they denied them. These two flags have their danger and great affairs, due to the accuracy of their issues, and the abundance of similarities in them, until their violation occurred in the era of the right days of Arabism, as they resemble grammar in the accuracy of his considerations, and the ease of corruption parcels on the queen in it.