If in this universe there are many rulers and justices who disagree about punishment and reward, their contradictory actions will neutralize each other, and no one will be punished or rewarded. Otherwise, if their contradictory acts fail to neutralize each other, everyone will have to be both punished and rewarded.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
यदि स्युर्बहवो लोके शास्तारो दण्डधारिणः । कस्य स्यातां न वा कस्य मृत्युश्चामृतमेव वा
yadi syurbahavo loke śāstāro daṇḍadhāriṇaḥ | kasya syātāṃ na vā kasya mṛtyuścāmṛtameva vā
SB 6.3.5