Birds in their little nests agree proverb
Those who live in the same house should should try to treat each other amicably.
You both shouldn't argue each other. Remember birds in their nests agree.
To argue with somebody
When an argument or a fight occurs, both parties involved are responsible for it.
To cause an argument or a fight
Used to indicate that opposing groups of people are clearly distinguished and ready to start fighting or arguing with each other
The phrase began as part of a poem written by Isaac Watts in 1715, in his Divine Songs Attempted in the Easy Language of Children:
"Birds in their little nest agree; and ‘tis a shameful sight, when children of one family fall out, and chide, and fight."