ذَٰلِكَ بِمَا قَدَّمَتْ يَدَاكَ وَأَنَّ ٱللَّهَ لَيْسَ بِظَلَّٰمٍ لِّلْعَبِيدِ

This is due to what your two hands have sent before, and because Allah is not in the least unjust to the servants.