Throw

Throw[value] stops evaluation and returns value as the value of the nearest enclosing Catch.

Throw[value, tag] is caught only by Catch[expr, form] where tag matches form.

Examples

Throw and catch a value:

Catch[
  Do[If[i > 5, Throw[i]], {i, 1, 10}]
]
(* 6 *)

Please visit the official Wolfram Language Reference for more details.