Bismil-laahi rrahmaani rrahiim.
Kul huva llahu ahad. Allahu ssomad. Lam yalid va lam yuulad. Va lam yakul-lahu kufuvan ahad.
“Say: “He – Allah – One, Allah – Never-ending [only He – That is needed by everybody endlessly]. He bore and was not born, and nobody can equal Him” (see Quran, 112).
A man having heard another repeating the words of the surah “Al-Ikhlas”, many times came to the Prophet Allah, let Allah bless and greet him, and told him about it pointing that it was too short. Having heard him the Prophet Allah said: “I swear by That, at whose hand my soul is [I swear by Allah, the Creator of everything], indeed the surah “Al-Ikhlas” [by implication and importance in it] equals [one] third [of all] Quran!”.1 [There is a monotheism expressed in the best way in it].
1 See, for example: Al-Bukhari M. Sahih al-Bukhari (Summary) [Hadiths corpus of imam al-Bukhari]: In 2 Vol., V.2, p.259, Hadith #1441(5013).