Imam Askari (peace be upon him) said: By giving the Surah of Hamd to the Holy Prophet (peace be upon him and his family), God granted him a privilege that He did not give to any of the previous prophets (peace be upon him), except for Sulayman ibn Dawud (peace be upon him); who only has Bismillah al-Rahman al-Raheem from this Surah. [And Sulayman (peace be upon him)] considered this verse superior to all the kingdom and power that God had given him [and] said: “O God! What great and valuable words they are, I consider these words more valuable than all the kingdom that You have given [me].” God addressed him: O Sulayman! How could they not be more valuable, and now that every servant of Mine, whether male or female, calls upon Me with these words, I will grant him a reward a thousand times your kingdom in charity. This is one-seventh of the entire Surah that I have given to Muhammad (peace be upon him), the master of the prophets (peace be upon him).

Tafsir Ahlul Bayt (peace be upon him) Vol. 1, p. 10 Bihar al-Anwar, Vol. 89, p. 257/ Imam al-Askari, p. 589