Proverbs 22:26-28

Amplified Bible

²⁶ 
Do not be among those who give pledges [involving themselves in others’ finances],
Or among those who become guarantors for others’ debts.
²⁷ 
If you have nothing with which to pay [another’s debt when he defaults],
Why should his creditor take your bed from under you?

²⁸ 
Do not move the ancient landmark [at the boundary of the property]
Which your fathers have set.