[1] (V.22:78) Religion is very easy. And the statement of the Prophet صلى الله عليه وسلم: "The most beloved religion to Allâh عز وجل is the tolerant Hanifiyyah [i.e., Islâmic Monotheism, i.e., to worship Him (Allâh) Alone and not to worship anything else along with Him.]"
Narrated Abu Hurairah رضي الله عنه: The Prophet صلى الله عليه وسلم said, "Religion is very easy and whoever overburdens himself in his religion will not be able to continue in that way. So you should not be extremists, but try to be near to perfection and receive the good tidings that you will be rewarded; and gain strength by offering the Salât (prayers) in the mornings, afternoons and during the last hours of the nights." (See Fath Al-Bari, Vol.1, Page 102). (Sahih Al-Bukhari, Vol.1, Hadith No.38).
[2] (V.22:78) See the footnote of (V.2:143).