– an Arabic Qur’ān, without any crookedness

The word qur’ān need not mean the Muslim scripture as it is known today (the meaning of qur’ān is simply “recitation”; see the comment at 2.185, p. 61). This is the first in a remarkable series of claims for an “Arabic Qur’ān” in Sūras 39–46. See the analysis of claims for “Arabic” at 43.2–3.