( فَدَلَّاهُمَا بِغُرُورٍ) (So he made them fall, through deception): Satan took them down from the high level of obedience to the low level of disobedience by deceiving them with delusions of power and immortality.
(فَلَمَّا ذَاقَا الشَّجَرَةَ بَدَتْ لَهُمَا سَوْآتُهُمَا) (And when they tasted of the tree, their private parts became apparent to them): They did not eat from it yet, they only tasted it. Allah (swt) says: (they), so it was not Eve alone but both Adam and Eve together.
( وَطَفِقَا يَخْصِفَانِ عَلَيْهِمَا مِن وَرَقِ الْجَنَّةِ) (and they began to fasten together over themselves from the leaves of Paradise): (and they began) means to start and initiate something.
(to fasten together): The Arabic word means to take something and stick it to something else in order to conceal it. They began to cover themselves with the leaves of the Garden.
( وَنَادَاهُمَا رَبُّهُمَا أَلَمْ أَنْهَكُمَا عَن تِلْكُمَا الشَّجَرَةِ وَأَقُل لَّكُمَا إِنَّ الشَّيْطَانَ لَكُمَا عَدُوٌّ مُّبِينٌ) (And their Lord called to them, “Did I not forbid you from that tree and tell you that Satan is to you a clear enemy?”): They disobeyed two of Allah’s (swt) commands, the first one was not to approach a specific tree, but they did. The second disobedience is that Allah (swt) told them and made it clear for them that Satan is their enemy, but they still believed the oath he made to them and trusted that he could be their advisor.