This paper studies an important Book of Grammar classified among as one of pedagogical books, entitled al-Irshad. This book was written by the celebrated scholar, Saad ud-Din bin Omar al-Taftazani. This study starts with a brief Introduction about this book and a description of the two editions of the book used by the study i.e. al-Awqaf edition, Baghdad and Mosul. Because of the characteristics of the former edition, it was adopted as the original source of the study. Then, we explained our method of study. We aimed to show this book as thoroughly investigated in order to be loyal to the Glorious Quran and the author of the book.