The quatrain form is one of the most common forms of Persian poetry in the fourth and fifth centuries. However, compared to Iraqi style poetry, the number of quatrains of Khorasani style poets is much less and some poets such as Manouchehri have paid less attention to it. The main purpose of this article is to study the most common rhetorical forms used in Khorasani style quatrains and to study the fact that after Khayyam and Attar no Khasi quatrain has been used in Persian poetry Rather, the use of this type of quatrain has been considered by poets since the beginning of Persian poetry. The method of analysis is quantitative and descriptive. The result of the research showed that Azraghi Heravi, Farrokhi, Ansari, etc., like Qatran, paid attention to the beloved in description. The most basic rhetorical element used in Khorasani style quatrains is metaphor and simile. Moezi Neyshabouri, Qatran Tabrizi, Azraghi Heravi, and Ansari are the poets whose metaphor and simile can be clearly seen in their Divans. The poets of this period had compared the praisers and their parts of body to the elements of nature, which indicates that they paid special attention to their surroundings. The greatest effort of Azraghi is made to make imaginary similes and exaggerate the similes; thus, the poets of the Samanid period and the first half of the fifth century tried to bring an objective and similar image to every sensory and natural phenomenon.
