Sūratul-Fātihah is also referred to as "Ummul-kitāb". This is because it is considered the "Mother of the Books" and is the opening chapter of the Qur'an. It is a highly revered chapter and is recited in every prayer performed by Muslims. The name "Ummul-kitāb" signifies its importance as it contains the essence of the entire Qur'an and summarizes its key messages.