Surah Al-Jinn, ayah 4

72:4

وَأَنَّهُۥ كَانَ يَقُولُ سَفِيهُنَا عَلَى ٱللَّهِ شَطَطٗا ٤

Wa annahū kāna yaqūlu safīhunā 'alallāhi shatatā

And that our foolish one [i.e., Iblees]1766 has been saying about Allāh an excessive transgression.

Footnotes

1766 A plural form may also be understood, i.e., "the foolish ones among us."