It was so that Amir Al-Momineen -asws was saying...

It was so that Amir Al-Momineen -asws was saying: \u2018Allah -azwj has not been worshipped with anything superior than the intellect\u2019.

And the intellect of a person cannot be completed until there happen to be various characteristics in him \u2013 The (people would be) secured from (any form of) disbelief and the evil (being exercised) from him, and both the righteous guidance and the goodness be expected from him; he would give away from the excess of his wealth, and he would restrain from the excess of his words, and his share from the world would (just) be the subsistence (an extract) [7] \n Therefore, making an effort to understand Islam through \u2018aql\u2019 (intellect) is expected from the devout servants of Allah -azwj .

\u00a0However, simple beliefs and acts of worship were subjected to gradual changes, either deliberately or due to forgetfulness of the Hadith narrators\/compilers.