some years ago my friend forget to stamp re-entry visa for here sister, when they were comming back to Doha, Qatar immigaration stoped them, Then he left here sister at Qatar immigaration office and came back to Doha,then he asked the immigaration officer for re entry visa stamp, after stamping re entry visa, he went back to Slawa Boarder and show this to boarder immigaration of Qatar , then her sister came back to Doha,