With accent marks:
Долг платежо́м кра́сен.
The beauty of a debt is its payment
This proverb reminds us that we should always pay our debts back.
The word красен here comes from красный (red). In the old times, красный meant красивый.
The closest English equivalent is "One good turn deserves another".
Other Russian proverbs
Without labor, you can not even catch a fish in the pond.
Оne can not see the wood for the trees.
Don’t wave your fists after the fight.
An old friend is better than two new ones.
You are greeted by your clothes but bid farewell by your mind.
With a darling, even a hut is a paradise.
When the job is done, you can go for a walk.
(lit.) Whoever gets up early, God gives him