﴿ ذَٰلِكَ بِمَا قَدَّمَتْ أَيْدِيكُمْ وَأَنَّ ٱللَّهَ لَيْسَ بِظَلَّٰمٍۢ لِّلْعَبِيدِ ﴾

“in return for what your own hands have wrought - for, never does God do the least wrong to His creatures!"”

That chastisement is for what your hands have sent before you — He refers to this their actions exclusively with these hands because most actions are accomplished with them — and know that God is never unjust to His servants’ such that he would punish them for no sin.