From the Grammatical Connotation Routers at Ibn Ashour(T1393AH) in his Interpretation of Liberation and Enlightenment Grammatical Interpretation by Deleyion and Increase

Abstract

Grammatical interpretation is one of the means that grammarians have resorted to in order to get rid of the conflict of eloquent texts - especially the Holy Qur’an - with the rules that they have established. It has become an important basis on which they have relied in restricting the rules and grammatical guidance of many Arabic texts, and thus it is an industry and a trick used as a pretext. Grammarians use it to avoid some formulas and structures deviating from the established many language rules and methods that they have established.

Interpretation has a close connection to a group of linguistic issues that force scholars to resort to it, such as: introduction and delay in texts, deletion and addition, inclusion and representation.