MUHAMMAD’S TEACHINGS TO MANKIND
“ Abu-Sa'īd said, "The Messenger of God, peace and blessings of God be upon him, said, 'The key to prayer is purification, its consecration[1]is [in the initial] testifying to God’s greatness, and the end of its consecration[2] is in saying the (final) salutation[3]. A peson's prayer is not valid without reciting "All praise"[4] and [another] chapter (of the Qur'ān) – whether in an obligatory prayer or otherwise.'"[5] Footnotes: [1] (Tahrīm) Entering the state of sanctity for prayer. [2] (Tahlīl) Ending the state of sanctity for prayer. [3] Saying "God's peace and mercy be upon you" at the end of the prayer. [4] This refers to al-Fātihah, the first chapter of the Qur'ān. [5] Although this hadīth indicates that it is compulsory to recite another chapter after reciting al-Fātihah, it is weak and contradicts a more sound hadīth, therefore it cannot be used as evidence of a rule. ”