Since all or some of the aesthetic researches in Persian texts have been concentrated on the poetic texts, it should not be ignored that prose texts also have the required characteristics, therefore, surveying, classification, and analyzing of the rhetoric prose works like “The Rahatossodur and Ayatossorur” from Rawandi in a scientific method which have been able to approach in a special period to verse and adorn themselves with poetic-prose characteristics seem to be inevitable.In this essay, “The Rahatossodur”, only from the view of science and rhetorics, that’s, the state of the subject and the ways of its function have been extracted, studied, criticized, and justified; and also some brief and general discussions in relation with the presenting of the Rahatossodur and its literary value, description of language, sentence, parts of the sentence, subject, the relation of grammar and rhetorics have been discussed. Later on examples of the extracted samples from the Rahatossodur will be forwarded and explained and their classification, based on the rhetoric books in general and three books: The Moalemolbalagha, The Rhetorics from Ostad Homaee, and The rhetorics from Dr. Shamissa in a specific way will be dealt with.