This document provides answers to questions about specific Surahs (chapters) and ayahs (verses) in the Qur'an. It identifies Surah Yaseen as being known as the "heart" of the Qur'an, and Surah Ikhlaas as being equivalent to one-third of the Qur'an. It also names Ayah al-Kursi as the greatest ayah, and Ayah al-Dain as the longest.