قُلْ أَرَءَيْتُمْ إِن كَانَ مِنْ عِندِ ٱللَّهِ ثُمَّ كَفَرْتُم بِهِۦ مَنْ أَضَلُّ مِمَّنْ هُوَ فِى شِقَاقٍۭ بَعِيدٍ Qur’an Fussilat (41:52)Qul araaytum in kana min AAindi Allahi thumma kafartum bihi man adallu mimman huwa fee shiqaqin baAAeedin
According to Razii, this is an implied allusion to the attitude of people who - as mentioned in verses {4} and {5} of this surah - "turn away" from the message of the Qur'an, saying, as it were: "Our hearts are veiled from whatever thou callest us to, [O Muhammad,] and in our ears is deafness, and between us and thee is a barrier."