سورة المدثر

Imam Sadiq (peace be upon him): إِنْ هذا إِلَّا قَوْلُ الْبَشَرِ [This is naught but the word of a mortal], [this reports the speech of Walid]: meaning that this [Quran] is not a revelation from Allah the Mighty and Majestic.

Imam Baqir (peace be upon him): إِنَّهُ فَکَّرَ وَ قَدَّرَ، فَقُتِلَ کَیْفَ قَدَّرَ [Indeed he thought and plotted, so may he be destroyed for how he plotted] up to إِنْ هذا إِلَّا قَوْلُ الْبَشَرِ [This is naught but the word of a mortal] — what is meant is his planning, thinking and reflection, and his arrogance, in that he laid claim to a rank that was not befitting him.