Holy Quran » AN NISAA' : 111

4 : 111

وَمَن يَكْسِبْ إِثْمًا فَإِنَّمَا يَكْسِبُهُ عَلَى نَفْسِهِ وَكَانَ اللّهُ عَلِيمًا حَكِيمًا

And whoever commits a sin only earns it against himself. And Allah is ever Knowing and Wise.

Tafseer

{ ومن يكسب إثما } ذنبا { فإنما يكسبه على نفسه } لأن وباله عليها ولا يضر غيره { وكان الله عليما حكيما } في صنعه .

It earns a sin sin for he earned himself and guessed because it does not harm other was God Knower, the Wise in the making.