1011 – From him as well: a man heard another man reciting Qul huwa Allahu Ahad, repeating it over and over. When morning came he went to the Messenger of Allah (peace and blessings be upon him) and told him what he had heard, as though he regarded the action as insignificant. The Messenger of Allah (peace and blessings be upon him) replied, “By Him in Whose hand is my soul, it is equal to one-third of the Qur’an.” Reported by al-Bukhari.

[Commentary]
Al-Nawawi (may Allah have mercy on him), in the section he devoted to encouraging the recitation of particular surahs of the Book of Allah, cited the hadiths on the virtue of Qul huwa Allahu Ahad, Allahu al-Ṣamad…

This surah is called Sūrat al-Ikhlās (the Chapter of Sincerity) because Allah has singled it out for Himself: it mentions nothing but His names and attributes. In addition, whoever recites it while believing in it and holding fast to what it signifies is sincerely devoted to Allah and free of polytheism. The whole surah is comprised of the names and attributes of Allah. “Qul huwa Allahu Ahad” (Say: He is Allah, One) – it is said that the polytheists asked the Prophet (peace and blessings be upon him), “Describe your Lord to us,” that is, what is His lineage, as though they were saying, “From whom