Rif Gittin 1a {2a - b}

1a

{Gittin 2a}
Mishna:

המביא גט ממדינת הים צריך שיאמר בפני נכתב ובפני נחתם
רבן גמליאל אומר אף המביא מן הרקם ומן החגר
ר"א אומר אפילו מכפר לודים ללוד
וחכ"א אינו צריך שיאמר בפני נכתב ובפני נחתם אלא המביא גט ממדינת הים והמוליך והמביא ממדינה למדינה במדה"י צריך שיאמר בפני נכתב ובפני נחתם
רשב"ג אומר אפי' מהגמוניא להגמוניא

THE BEARER OF A BILL OF DIVORCE [GET] FROM [A HUSBAND IN] FOREIGN PARTS [TO THE LAND OF ISRAEL] IS REQUIRED TO DECLARE [ON PRESENTING IT TO THE WIFE]. 'IN MY PRESENCE IT WAS WRITTEN AND IN MY PRESENCE IT WAS SIGNED.'

RABBAN GAMLIEL SAYS: [THIS DECLARATION IS] ALSO [REQUIRED] IF HE BRINGS IT FROM REKEM OR FROM CHEGAR.

RABBI ELEAZAR SAYS: EVEN IF HE BRINGS IT FROM KEFAR LUDIM TO LUD.

THE SAGES, HOWEVER, SAY THAT THE DECLARATION 'IN MY PRESENCE IT WAS WRITTEN AND IN MY PRESENCE IT WAS SIGNED' IS REQUIRED ONLY FROM ONE WHO BRINGS A BILL OF DIVORCE [FROM FOREIGN PARTS TO THE LAND OF ISRAEL] OR WHO TAKES IT [FROM THE LAND OF ISRAEL TO FOREIGN PARTS]. THE BEARER [OF SUCH A DOCUMENT] FROM ONE PROVINCE TO ANOTHER IN FOREIGN PARTS IS ALSO REQUIRED TO DECLARE, IN MY PRESENCE IT WAS WRITTEN AND IN MY PRESENCE IT WAS SIGNED.'
RABBAN SHIMON BEN GAMLIEL SAYS IT IS REQUIRED EVEN IF HE TAKES IT FROM ONE GOVERNORSHIP TO ANOTHER.

Gemara:

מ"ט אמר רבה לפי שאין בקיאין לשמה

What is the reason?
Rabba said: {Gittin 2b} It is because [the Jews in foreign parts] are [for the most part] ignorant of the rule of 'special intention'.