non-interference between coordinate courts

It is a doctrine of law too long established to require a citation of authorities, that, where a court has jurisdiction, it has a right to decide every question which occurs in the cause, and whether its decision be correct or otherwise, its judgment, till reversed, is regarded as binding in every other court; and that, where the jurisdiction of a court, and the right of a plaintiff to prosecute his suit in it, have once attached, that right cannot be arrested or taken away by proceedings in another court. These rules have their foundation, not merely in comity, but on necessity.