Note 214
From The Invasion of Spain, part of Chapter 51 of the Decline & Fall

Absit (said the Catholic to the vizier of Bagdad)ut pari loco habeas Nestorianos, quorum praeter Arabas nullus alius rex est, et Graecos quorum reges amovendo Arabibus bello non desistunt, etc.

See in the Collections of Assemannus (Bibliot. Orient. tom. iv. p. 94 - 101) the state of the Nestorians under the caliphs. That of the Jacobites is more concisely exposed in the Preliminary Dissertation of the second volume of Assemannus.