Гарван гарвану око не вади.
“A crow does not peck out another crow's eye.”
Those who are alike, especially wrongdoers, protect and shield one another rather than expose each other's faults.
— Traditional Bulgaria Wisdom, Bulgaria
Source: Traditional Bulgarian proverb (also documented in shared Balkan/Serbian oral tradition), public-domain oral tradition
More Proverbs from Bulgaria
Give him power, and you'll see who he really is.
Power reveals a person's true character.
For the hungry, even the ground is bread.
Desperate need makes people find sustenance and hope in the most unlikely places.
If you do not help yourself, even God cannot help you.
Self-reliance comes before any outside help; heaven helps those who help themselves.
Hasty work is a shame for the craftsman.
Rushing a task produces poor results that reflect badly on its maker.
The hasty bitch gives birth to blind puppies.
Acting in haste produces flawed, incomplete results.
A friend is recognized in need.
True friendship reveals itself in difficult times.