it is no use crying over spilt milk
Definition:  human beings should not stay upset over a mistake that one cannot undo
Usage:  after the child knocked off his cup of coke, he was told it is no use to cry over a spilt milk

SEPEDI
Translation:  ga go hole go llela maswi ao a faletšego
Proverb: hlapi holofela leraga meetse a pšhile o a bona

XITSONGA
Translation:  a swi pfuni nchumu ku rilela ntswamba lowu halakeke
Proverb: loko mati ma halakile ma halakile

TSHIVENḒA
Translation:  a zwi na mushumo u lilela mafhi o tevhuwaho
Proverb: maḓi a tevhuwa o tevhuwa