a quo invito aliquid exigi potest (ay kwoh in-vI-toh al-i-kwid ek-s<<schwa>>-jIpoh-test).
[Latin] Scots law. From whom something may be exacted against his will. • The phrase appeared
in reference to the position of a debtor under a legal obligation, as distinguished from his position
under a natural, voluntary obligation. [Blacks Law 8th]