Abdul Aziz kashi's Manuscript "Sharh Almofassal" remained from the seventh and eighth centuries AH, and he explained zamakhshari's valuable book "Almofassal" with a mental prose and scientific manner. It can be found by reviewing his opinions he was a follower of the school of Basra. this Iranian author who was fluent in Arabic not sufficed to mention the views of scholars and in many cases he opined on deductive and auricular arguments. Ebn Al Hajeb is one of the scholars who khashi points much about his comments. Sometimes he confirms his opinions and sometimes criticizes and rejects his comments. His writing style is fluent and without complexity and logical terms. It is concluded that most of the Kashi's comments are right because of his strong scientific reasons to proof his claims. Furthermore, he confirms most of the Zamakhshari’s comments and proves his words.