▁the ▁cal i ph s ▁al - Ma ʿ mun ▁( 8 1 3 – 3 3 ) ▁and ▁al - M u ʿ t as im ▁( 8 3 3 – 4 1 ). ▁ ▁S ources ▁ ▁Account s ▁of ▁Sab r ish o ʿ ' s ▁patri arch ate ▁are ▁given ▁in ▁the ▁E cc les iast ical ▁Chron icle ▁of ▁the ▁Jacob ite ▁writer ▁Bar ▁Heb ra eus ▁( fl or uit ▁ 1 2 8 0 ) ▁and ▁in ▁the ▁ecc les iast ical ▁histor ies ▁of ▁the ▁N est or ian ▁writers ▁Mari ▁( tw elf th - century ), ▁ ʿ Am r ▁( four teenth - century ) ▁and ▁S lib a ▁( four teenth - century ). ▁ ▁Sab r ish o ʿ ' s ▁patri arch ate ▁ ▁A ▁brief ▁account ▁of ▁Sab r ish o ʿ ' s ▁patri arch ate ▁is ▁given ▁by ▁Bar ▁Heb ra eus : ▁ ▁After ▁him ▁( I sh o ʿ ▁Bar ▁N un ) ▁sat ▁Sab r ish o ʿ , ▁who ▁had ▁previously ▁been ▁bishop ▁of ▁Har ran ▁and ▁then ▁metropol itan ▁of ▁Dam asc us . ▁ ▁He ▁was ▁consec r ated ▁c atholic us ▁at ▁Sele u cia ▁in ▁the ▁year ▁ 2 1 7 ▁of ▁the ▁Arab s ▁[ AD ▁ 8 3 2 / 3 ], ▁and ▁died ▁after ▁ful fill ing ▁his ▁office ▁for ▁four ▁years . ▁ ▁A ▁far ▁more ▁substantial ▁account ▁is ▁given ▁by ▁Mari : ▁