Surah Yaseen - The heart of the Quran. Presented to you in elegant design. Importance of Surah Yaseen: Yā Sīn (Arabic: سورة يس) is the 36th chapter of the Qur'an with 83 ayat, and is one of the Meccan suras(Wikipedia). Regarding the name of the surah YaSin, Tafsir al-Jalalayn, a Sunni Tafsir, interprets by saying "Allah knows best what He means by these. ".