Translation of the verse 28 from Surah Az-Zumar : Number of verses 75 - - page 461 - Part 23.
An Arabic Quran, without any crookedness (therein) in order that they may avoid all evil which Allah has ordered them to avoid, fear Him and keep their duty to Him.
[It is] an Arabic Qur'an, without any deviance that they might become righteous.
(39:28) It is an Arabic Qur'an *46 free of all crookedness *47 that they may guard against their evil end.
*46) That is, "It has not been sent down in a foreign language so that the people of Makkah and Arabia should stand in need of a translator or interpreter, but it is in their own language, which they can understand directly."
*47) That is, "There is nothing of double-dealing in it so that a common man should find it difficult to understand, but everything has been presented in it in a straightforward manner, from which everyone can know what this Book states as wrong and why, what it states as right and on what ground, what it wants the people to accept and what it wants them to reject, and what it enjoins and what it forbids."
Source : Az-Zumar Verse 28: [It is] an Arabic Qur'an, without any deviance that they might become righteous.