(183) Chapter: Inducement towards the Recitation of some Special verses and Surah of the Noble Qur'an

Abu Sa'id Al-Khudri (May Allah be pleased with him) reported about Surat Al-Ikhlas (Chapter 112):
The Messenger of Allah (ﷺ) said, "By Him in Whose Hand my soul is, it is equivalent to one-third of the Qur'an."

According to another version, he (ﷺ) said to his Companions, "Is anyone of you incapable of reciting one-third of the Qur'an in one night?" They considered it burdensome and said: "O Messenger of Allah, which of us can afford to do that?" He (ﷺ) said, "Surat Al-Ikhlas [Say: He is Allah (the) One] is equivalent to one-third of the Qur'an."

[Al- Bukhari].

Commentary: One reading of Surat Al-Ikhlas has return and reward equal to the recitation of one-third of the Qur'an. This Surah mentions the Oneness of Allah. This is enough to make one realize how much Allah (SWT) likes the recitation and remembrance of His Oneness. This is the reason, He has declared Shirk (polytheism) an absolutely unpardonable sin.