About Surah Yaseen :
Is the 36th sūrah of the Quran. It has 83 verses (āyāt). It is regarded an earlier "Meccan surah". Some scholars maintain that verse 12 is from the Medinan period. While the surah begins in Juz 22, most of it is in Juz 23.
The surah begins with the eponymous (muqatta'at) Arabic letters: يس (yā sīn).The meaning of the letters Ya Sin, while being primarily unknown, is debated amongst Muslim religious academics. One of the interpretations is "O human being!" referring to Muhammad since the verses that follow are translated as "By the Qur´an, full of Wisdom, Thou art indeed one of the messengers".Tafsir al-Jalalayn, a Sunni beginners exegesis (tafsir), concludes, "God knows best what He means by these [letters]."
Yaseen is also one of the names of Muhammad, as reported in a saying of Ali, "I heard the Messenger of God say, 'Verily God has named me by seven names in the Quran: Muhammad
1. Muhammad
2. Ahmad
3.Ṭā-Hā
4.Yā Sīn
5.thou enwrapped (Al-Muzzammil)
6.thou who art covered (Al-Muddathir)
7. servant of God (ʿAbd Allāh)
Surah Yaseen is the Heart of the Quran:
It has been proposed that yā sīn is the "heart of the Quran". 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.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.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 (the "Seal of the Prophets").