You may hurt your colleague souls in several ways. All these ways are injustice and immorality. For example by corruption you are hurting your colleague souls. Atleast you are not exempting the poor and devoted people. If you do corruption in the case of unjust rich people, you should spend it for divine purpose. If you spend it for yourself or for your family, all of you will be completely destroyed.
A soul is beaten in the hell and the servants of Yama say “why have you done this deed which is not liked by God?” They will not say “why have you done this sin?” Anything that is not liked by God is a sin. By itself a sin is not a sin, because it is a feeling, which is a wave of awareness and is completely unreal. Hurting any soul, especially a believer in God is the basis of sin according to God. Punishment with an attitude to change the soul is exempted from this concept.
There should be no trace of revenge in punishment. If the soul is realized and changed, do not think of revenge. Jesus told that if you punish others for their sins, God shall punish you also for your sins. Punishment of a student by a teacher is not a sin, because it is for his change and upliftment only. The same aim exists when God punishes the souls.