A proverb meaning that those who suffer the same misfortune sympathize with one another (literally, 'fellow sufferers pity each other').
同病相憐れむと言うように、失業中の者同士はすぐに打ち解けた。
As the proverb says, those unemployed quickly opened up to one another.
彼は友人の苦しみを聞いて、同病相憐れむの気持ちを抱いた。
Hearing his friend's troubles, he felt sympathy as a fellow sufferer would.