The Quran is Upright and contains in it no Crookedness

Allah said:

“ All the praises and thanks be to Allah, Who has sent down to His slave (Muhammad) the Book (The Quran), and has not placed therein any crookedness.(He has made it) Straight”. (Quran 18:1, 2)

In this Verse, Allah informs us that one of the reasons why He is deserving of praise is that He has sent down thee Noble Quran- as if to point out that the Quran is the greatest of His blessings to mankind(and to jinns as well).

In the above mentioned verse, Allah said that the Quran contains in it no crookedness. In explaining this Verse, scholars of the Arabic language have pointed out that, although crookedness (iwaj in Arabic) is traditionally meant for tangible things – such as a crooked nose, crooked leg, or crooked lamp stand – it can also be used in a figurative sense. Therefore, the fact that the Quran contains in it no crookedness implies the following qualities: First, there is no contradiction between the various Verses of the Quran.

Allah said:

“Had it been from other than Allah, they would surely have found therein much contradictions.” (Quran 4:82)

And second, everything that Allah said in the Quran – in regard to Islamic Monotheism, Prophethood, rulings, laws, legislations, morals, history, lessons..etc… is the absolute truth; there is not even an iota of a mistake in any of its Verses.

In another Verse, Allah again mentioned that the Quran contains in it no crookedness, or in other words, it contains no contradiction, errors, or defects:

Allah Says:

“An Arabic Quran, without any crookedness (therein) (Quran 39:28)