One of the single most important functions of the row- that is, compliance between different words and different rhymes- that provide them with some prosodies, have not been investigated yet. in other words, Row gives freedom to the word rhyme that gives the word the ability to move across the continuum of musical rhyme and even closer to the beginning of the second line. According to the same row function, Words that cannot be used as rhyme in specific prosody might be pushed to be put the position corresponding to the prosody they are. For example, words (Jahan, Ravan, Javan, etc.) in the prosody of Motagharaeb Mosamman Salem, (without row or letters of Vasl, Khorooj, Nayereh ) cannot be placed in the position of rhyme, so by bringing an "ی" or "ر" an the like at the end of them, these words can be used in place of the words rhyme in this prosody. A cursory examination of the first period of Persian poetry, we can see that in a lot of poems, row serves as an anchor that moves rhyme words in order to reconcile them with some prosodies. In this article, we briefly discuss this basic function of row and shown that even in the short sonnets that rhymes do not need to be in there, some kinds new rhyming words with different prosodies of the row is used.
Today far more extensive studies have been conducted on one of the unique characteristics of Persian poetry- the row. The basic and similar structure of all these researches is due to the formal, statistical, grammarial and sometimes musical aspects of the row have been formed by poets in their poetries.
The main reason for the emergence of rows in Persian poetry is its prosodic function that has already been paid less. I just found something in the book Ghosn al-ban which the author had some similar view to the row. In this study, we made our attempt to show another reason for the entry and spread of the row in Persian poetry by means of a new approach. It should also be noted that in these lines to avoid as much as possible the repetitive and stereotyped points regarding the row
