If fortune turns against you, even jelly breaks your tooth.
More Persian Proverbs:
The tears of the roasting meat kindle the fire even more.Persian
It is nothing for one to know something unless another knows you know it.
Persian
Work is twice done by the man in a hurry.
Persian
When the tide of misfortune moves over you, even jelly will break your teeth
Persian
You can't polish a turd.
Persian
Do not let the cat watch over the bacon.
Persian