Answer:
After they ate from the forbidden tree, they looked at themselves and found that their private parts became apparent to them. They tried to cover their private parts with leaves of Paradise.
لما أكلا من الشجرة الممنوعة نظروا فوجدوا أن عوراتهم بانت و كانا عاريين .فأخذوا ورق الشجر ليستروا فيها عوراتهم.
So they both ate from the tree and then their nakedness was exposed to them, prompting them to cover themselves with leaves from Paradise. So Adam disobeyed his Lord, and ˹so˺ lost his way.) Taha 20:121
( فَأَكَلاَ مِنْهَا فَبَدَتْ لَهُمَا سَوْءَاتُهُمَا وَطَفِقَا يَخْصِفَانِ عَلَيْهِمَا مِن وَرَقِ ٱلْجَنَّةِ وَعَصَىٰ ءَادَمُ رَبَّهُ فَغَوَى ) طه 20 : 121