From Longman Dictionary of Contemporary Englishstand surety (for somebody)stand surety (for somebody) lawto be responsible for paying a debt, appearing in court etc if someone else fails to do so → surety
Examples from the Corpus
stand surety (for somebody)• These are most visible when ducal retainers stood surety for each other.• She was prepared to stand surety for me, but they just wasn't having it.• Nobody would stand surety, so bail wasn't granted again. 