Quranic ruku's; from historical background to usages in Islamic culture

One of the divisions of the text of the Qur'an next to the verse, surah, hizb and Juz' is called " ruku';" A set of verses that are very similar in subject and meaning and unlike most Qur'anic divisions, the number of letters and words does not interfere in determining its scope. despite the the remarkable importance of ruku' in reading and interpretation, it has received less attention than its other counterparts. the oldest memorable mention of ruku's dates back to the fourth century AH; where for the supererogatory nights of Ramadan, parts of the Qur'an should be recited after the sura al-Fatiha. from then on, the usages and necessity of paying attention to the ruku's gradually increased until its sign appeared in the margins of some mus'hafs. the present article, in a descriptive-analytical method, first tries to discuss the relationship between Quranic ruku's and paragraphing by text reading studies. then tell about the place of Quranic ruku's in islamic culture and finally explain its benefits in the form of the functions of reciting the Quran (propaganda and educational aspect) and writing commentary (scientific aspect).