IN CUJUS REI TESTIMONIUM
in cujus rei testimonium (in kyoo-j<<schwa>>s ree-I tes-t<<schwa>>-moh-nee-<< schwa>>m). [Law Latin] Hist. In witness whereof. • These words were used to conclude deeds. The modern phrasing of the testimonium clause in deeds and other instruments — beginning with in witness whereof — is a loan translation of the Latin.
[Blacks Law 8th]