With accent marks:
Заста́вь дурака́ бо́гу моли́ться – он и лоб расшибёт.
Make a fool pray to God - he will break his forehead.
This proverb is about a stupid person who, being too zealous, only harms the cause.
The proverb originates from the customs of the Orthodox Church. During prayer, believers give obeisances to the earth, trying to touch the floor in the temple by the forehead.
A fool, from excessive diligence, can bow so hard that his forehead will also be smashed against a stone floor.
Other Russian proverbs
What goes around comes around.
A titmouse in hands is better than a crane in the sky.
Water wears away a stone.
We don't appreciate what we have but we cry when we lose it.
Eggs don't teach the chicken.
Crowded, but not aggrieved.
Start taking care of the dress while it's new, and of your honor while you are young.
The morning is wiser than the evening.