Literally translating to 'past water doesn't move the mill', this phrase is used to mean that what happened in the past can't be changed and won't affect the present or future. It's similar to the English saying 'there's no use crying over spilt milk'.
Examples
- Spanish: No te preocupes por lo que pasó. Agua pasada no mueve molino.
- English: Don't worry about what happened. There's no use crying over spilt milk.