<strong>ملخص الدراسة:</strong>

Linguistic deviation occurs a lot in Arabic language. In someuses, it occurs either compulsory or non-compulsory.The current study aims at exploring both types of linguistic diversions(compulsory and non-compulsory) in the poetic work of Imam Shafi'i.It also discusses the phonetic, grammar and structure deviationand their effect on the beauty of the poetic structure and on the way ofinforming, surprising and attracting the audience.