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. Surah Yaseen is known as heart of the holy Quran.