expression
a man is a man no matter how poor; a man's worth isn't in his appearance
Proverb meaning that a man's true worth or character is not diminished by poverty or humble circumstances. The literal image is of a man with his hair tied with straw (a sign of poverty) who is still a man.
藁で束ねても男は男だ。見かけで人を判断してはいけない。
A man is a man even if his hair is tied with straw. You shouldn't judge people by their appearance.