Abstract:

        The early grammarians paid much attention to the issue of poetic necessity, so some of them have applied it to everything that came in poetry, whether or not the poet had it, others said that it is what the poet is obliged to do.         As the question of necessity has many forms, so the researcher chose to search for at Ibni Hisham al-Ansari (761 H) in his book "Awdahulmasalik ila Alfiati Ibni Malik," according to the grammatical criteria to which the Serafi originated. These criteria determine the necessity, and its formulas and guidance. The researcher used the opinions of Ibn Hisham, which he mentioned in his other books, and what also noted in the grammar references. He investigated emergence of the necessity, and views of the most prominent grammarians till reaching to the opinion of Ibn Hisham, which he showed in his poetic examples which classified to extra, deletion, precedence and delay, and substitutions necessities.        He has followed in this research the descriptive historical approach, which depend on the collecting scientific material from its original sources, analysing them, and detailing statements of the grammarians according to their deaths. The study was then ended with the prominent findings.

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