The research dealt with a scientific grammatical figure who had a great scientific impact with his many writings. One is pleased to participate in the study and investigation of one of the Arabic sciences, which is the science of grammar, which is indispensable in the study of all other sciences. Therefore, it is called the science of the instrument, which is necessary in preserving the tongue. Of error and melody in speech, and based on that, the choice in this research was made to present a study in which we dealt with Al-Bulawis translation, his method, and his resources in his book, Mufid Al-Irab, which we accomplished in our academic thesis, which has not yet been discussed. The nature of the study in this research necessitated dividing it into three sections dealing with In the first, we study the translation of the life of Issa bin Ali al-Balawi, and the second section we devoted to his methods in his book Mufid al-Arab, and the third to study the authors resources in the book. If I have succeeded in that, then all success is from God, and if I failed, then suffice me that I made the least effort in it and there were no mistakes in it. It is from myself.