Surat Al-'A`rāf - سورة الأعراف

فَوَسْوَسَ لَهُمَا الشَّيْطَانُ لِيُبْدِيَ لَهُمَا مَا وُورِيَ عَنْهُمَا مِن سَوْآتِهِمَا وَقَالَ مَا نَهَاكُمَا رَبُّكُمَا عَنْ هَٰذِهِ الشَّجَرَةِ إِلَّا أَن تَكُونَا مَلَكَيْنِ أَوْ تَكُونَا مِنَ الْخَالِدِينَ

: Then Shaitan (Satan) whispered suggestions to them both in order to uncover that which was hidden from them of their private parts (before); he said: "Your Lord did not forbid you this tree save you should become angels or become of the immortals."