 The negotiations succeeded, and moreover, the Sassanids and Byzantines delineated their borders to prevent future raiding between their respective Arab clients.However, to the embarrassment of the Sassanids and the outrage of the Byzantines, four hundred Tayyid tribesmen raided several minor villages in Byzantine territory while representatives of the two sides were meeting in Nisibis.Despite this violation of the bilateral agreement, the Sassanid-Byzantine peace held.