Кто любит занимать, тому несдобровать

If you often get into debts, you will pay for it

Cf: Borrow and borrow adds up to sorrow (Am.). The borrower runs in his own debt (Am., Br.). Borrowing brings sorrowing (Am.). Не that borrows must pay again with shame and loss (Br.). Не that goes a-borrowing, goes a-sorrowing (Am., Br.)