Surah Al fatihah, the Opening. What a beautiful surah given to us by Allah! This surah summarises the entire purpose of our life. There is no prayer, no literature, no statement in this world that is recited as much as these seven verses. Allah SWT describes this surah as Sab-al-mathaani, the seven oft repeated verses of the Qur'aan. Every practicing Muslim recites this surah around 24 times a day.
Excerpt taken from Sheikh Yasir Qadhi's lecture series: The Message of the Qur'an, part 1.