the chapters (suras) of the qur'an are arranged roughly in order of
Surah A Surah (/ˈsʊərə/;[1] also spelled Sura; Arabic: سورة‎ sūrah, plural سور suwar) is the term for a chapter of the Qur'an. There are 114 Surahs in the Qur'an, each divided into verses. The chapters or suras are of unequal length, the shortest chapter (Al-Kawthar) has only three ayat (verses) while the longest (Al-Baqara) contains 286 verses.[2] Of the 114 chapters in the Qur'an, 87 are classified as Meccan, while 27 are Medinan. This classification is only approximate in regard to location of revelation; any chapter revealed after migration of Muhammad to Medina (Hijrah) is termed Medinan and any revealed before that event is termed Meccan. The Meccan chapters generally deal with faith and scenes of the Hereafter while the Medinan chapters are more concerned with organizing the social life of the nascent Muslim community and leading Muslims to the goal of Dar al-Islam by showing strength. Except for sura At-Tawba, all chapters or suras commence with 'In the Name of God, the Merciful, the Compassionate'. This formula is known as the Bismillah and denotes the boundaries between chapters. The chapters are arranged roughly in order of descending size; therefore the arrangement of the Qur'an is neither chronological nor thematic. Suras (chapters) are recited during the standing portions (Qiyam) of Muslim prayers. Sura Al-Fatiha, the first chapter of the Qur'an, is recited in every unit of prayer and some units of prayer also involve recitation of all or part of any other sura.
Ya Sin It has been proposed that Yāʾ-Sīn is the "heart of the Quran".[5] The meaning of “the heart” has been the basis of much scholarly discussion. The eloquence of this surah is traditionally regarded as representative of the miraculous nature of the Qur'an.[6] It presents the essential themes of the Qur'an, such as the sovereignty of God, the unlimited power of God as exemplified by His creations, Paradise, the ultimate punishment of nonbelievers, resurrection, the struggle of believers against polytheists and nonbelievers, and the reassurance that the believers are on the right path, among others.[7] Yā Sīn presents the message of the Qur'an in an efficient and powerful manner, with its quick and rhythmic verses. This surah asserts that Muhammad was not a poet, rather he was the greatest and the last messenger of Allah to come.