It is no secret to the student of Arabic that the origins of grammar have a great value and impact in proving and documenting the language, and the origins of grammar were established with the establishment of Arabic grammar during the stage of application, and after increasing of the authorship in the grammar’s science, the grammarians, wanted to theorize for this science and set its limits and draw its general framework in the fourth century AH; so its applying emergence coincided with the emergence of grammar, and its theorizing stage was delayed. It was evidence that branched out in proving linguistic and grammatical rulings, based on argument and proof to guide the minds of grammarians according to the opinions that they believed in, and deduced from them the foundations on which they built their rulings. The research was concerned with the book: Al-Salik’s Approach of Speaking to the Alfiya of Ibn Malik) by Abu Hayyan Al-Andalusi, one of the famous grammarians. Our aim is to study two of the most important principles of grammar, namely: analogy and consensus, so this study was based on an introduction and then two sections. The first one dealt with the concept of measurement, its beginnings, its pillars, its types, and the position of Basra and Kufa, then Abu Hayyan’s position on these data pillars, its types, the position of the grammarians of Basra and Kufa, then Abu Hayyan’s position on these data, While the second topic dealt with the consensus, including the concept and conditions, and Abu Hayyan’s position on it, then we proved the most important results of the study in the conclusion points of the research, and we ask God for success and acceptance and praise be to Him in the first and the hereafter

origins, AbiHayyan, Alfiya, consensus, as-Salik, analogy, measurments, grammar In the name of of Allah the Merciful