Ikhlas equals a third of the Qur'an
وَالَّذِي نَفْسِي بِيَدِهِ إِنَّهَا لَتَعْدِلُ ثُلُثَ الْقُرْآنِ
Wa-lladhi nafsi bi-yadihi innaha la-ta'dilu thulutha-l-Qur'an.
"By the One in whose hand my soul is, it equals a third of the Qur'an."
Narrated by Abu Sa'id al-Khudri. Sahih al-Bukhari 5013, Sahih Muslim 811
A short reflection
Four short verses. Three minutes to memorise. Three times equals a recitation of the entire Quran in reward, by the most common interpretation.