﴿ قُلْ أَرَءَيْتُمْ إِن كَانَ مِنْ عِندِ ٱللَّهِ ثُمَّ كَفَرْتُم بِهِۦ مَنْ أَضَلُّ مِمَّنْ هُوَ فِى شِقَاقٍۭ بَعِيدٍۢ ﴾

“HAVE YOU given thought [to how you will fare] if this be truly [a revelation] from God, the while you deny its truth? Who could be more astray than one who places himself [so] deeply in the wrong?”

Say to them, O Muhammad, (Bethink you: If it is from Allah) if this Qur'an is from Allah (and ye reject it) saying that it is not from Allah, what will Allah do to you? (Who is further astray) from the Truth and guidance (than one who is at open feud) than one who is in opposition to the Truth and guidance; and it is also said that this means: than one who is in enmity with the Prophet (pbuh)? The reference here is to Abu Jahl.