Concise Quran Commentary
Satan told them: 'Allah has only forbidden you from eating from that tree because He does not want you to become angels or to live eternally in Paradise.'
فَوَسْوَسَ لَهُمَا ٱلشَّيْطَـٰنُ لِيُبْدِىَ لَهُمَا مَا وُۥرِىَ عَنْهُمَا مِن سَوْءَٰتِهِمَا وَقَالَ مَا نَهَىٰكُمَا رَبُّكُمَا عَنْ هَـٰذِهِ ٱلشَّجَرَةِ إِلَّآ أَن تَكُونَا مَلَكَيْنِ أَوْ تَكُونَا مِنَ ٱلْخَـٰلِدِينَ
Then Satan whispered to them in order to expose what was hidden from them of their private parts. He said, “Your Lord has only forbidden to you this tree to prevent you from becoming angels or immortals.”