Sanhedrin 11B

תקיפאי קדמאי, לעינוותני בתראי.

the earlier, stern authorities and the later, humble authorities, for although Rabban Shimon ben Gamliel was known as particularly humble, his proclamation was written with less modesty than that of his father, Rabban Gamliel, who was known to be particularly stern.

דתניא: מעשה ברבן גמליאל שהיה יושב על גב מעלה בהר הבית, והיה יוחנן סופר הלז עומד לפניו, ושלש איגרות חתוכות לפניו מונחות.

As it is taught in a baraita (Tosefta 2:6): There was an incident involving Rabban Gamliel, who was sitting on a step on the Temple Mount, and Yoḥanan, that scribe, was standing before him, and 3 blank documents cut from parchment and ready for writing were set before him.

אמר לו: טול איגרתא חדא וכתוב: לאחנא בני גלילאה עילאה ולאחנא בני גלילאה תתאה, שלומכון יסגא. מהודעין אנחנא לכון דזמן ביעורא מטא לאפרושי מעשרא ממעטנא דזיתא. וטול איגרתא חדא וכתוב: לאחנא בני דרומא, שלומכון יסגא. מהודעין אנחנא לכון דזמן ביעורא מטא לאפרושי מעשרא מעומרי שובליא.

Rabban Gamliel said to the scribe: Take one document, and write: To our brothers, the people of the Upper Galilee, and to our brothers, the people of the Lower Galilee, may your peace increase. We are informing you that the time has come for eradication of tithes that had been separated from produce but not yet given to their designated recipients, as is to be done in the 4th and 7th years of the Sabbatical-Year cycle, to separate the tithe from the vat of olives, because most of the local olives were grown in the Galilee. Rabban Gamliel continued, instructing the scribe: And take one document, and write: To our brothers, the people of the South, meaning the area of Judea and its environs, may your peace increase. We are informing you that the time has come for eradication, to separate the tithe from the mounds of stalks of grains, because most of the local grain was grown in the Judea region.