Sūra Yā-Sīn (Arabic: سورَة یس) is the thirty sixth sura of the Qur'an. It is a Makki Sura in the juz' twenty second and twenty third of the Qur'an. The sura is called so because it begins with disjoined letters (muqatta'at): "Ya" (ی) and "Sin" (س). According to hadiths, Sura Yasin is one of the most virtuous suras of the Qur'an such that it is referred to as the "Heart of the Qur'an".
