slap on (someone's) wrist

Translations
легкое наказание
He got a slap on the wrist for breaking the rules.
Он получил легкое наказание за нарушение правил.
Definitions
A mild or light punishment given for a wrongdoing, often implying that the consequences are not severe enough to deter future misbehavior.
Words
slap

noun
пощёчина
wrist

noun
запястье