So God commanded us to remember Him and thank Him, and Al-Fatihah combines remembrance and thanks, and it is what the praying person recites while standing, so gratitude in it is his saying, Praise be to God, Lord of the Worlds, and it is the same as remembrance of thanks to every remembrance in it and in the rest of the prayer, so remembering God during prayer and thanking Him is greater and better than remembering Him, Glory be to Him, and thanking Him in other than prayer. Prayer is the best subject of worship, and this prayer has affected the remembrance of this virtue, and it accrues to the one who remembers.