Common grammatical tools
Praise be to Allaah. We praise him and seek his help and seek forgiveness from him. We testify that there is no God but Allah and we bear witness that Muhammad is His slave and His messenger is the most righteous creation, and the best of them is a statement.
And after I lost my scarcity to research this subject scattered scientific material between the books and in its folds I wanted to be the first collector, so I put it under the title (common grammatical tools), and I mean the joint, which sometimes works a name and sometimes really and sometimes other characters, and made it in three terms:
The first topic is the common tools between name and character, such as: if, now, and, and right, and Jir, and Rab and others