Undoubtedly, they are among Our most dignified Fully believing devotees.
Both of them were among our righteous servants.
They were among Our believing worshipers
Surely they were both of Our believing servants
That they truly are from Our worshippers/slaves the believers
They were indeed among my believing servants
Indeed they are two of Our high ranking, firmly believing bondmen
Surely, they were both among Our believing servants
Surely, both of them were of Our servants blessed with (perfect faith)
Surely, they were both among Our believing servants
Verily! They were two of Our believing slaves