Nedarim

MISHNAH. [IF HE VOWS,] 'UNTIL THE HARVEST, 'UNTIL THE VINTAGE, OR, UNTIL THE OLIVE HARVEST,' HE IS FORBIDDEN (ONLY UNTIL IT ARRIVES. THIS IS A GENERAL RULE WHATEVER HAS A FIXED TIME AND ONE VOWS, 'UNTIL IT ARRIVES, HE IS FORBIDDEN UNTIL IT ARRIVES; IF HE DECLARES, 'UNTIL IT BE', HE IS FORBIDDEN UNTIL IT GOES. BUT WHATEVER HAS NO FIXED TIME, WHETHER ONE VOWS, 'UNTIL IT BE,' OR 'UNTIL IT ARRIVES,' HE IS FORBIDDEN ONLY UNTIL IT ARRIVES. [IF HE SAYS,] 'UNTIL THE SUMMER [HARVEST],'  OR, 'UNTIL THE SUMMER [HARVEST] SHALL BE,' [HE IS FORBIDDEN] UNTIL PEOPLE BEGIN TO BRING [THE FIGS] HOME IN BASKETS;' UNTIL THE SUMMER [HARVEST] IS PAST,' [IT MEANS] UNTIL THE KNIVES  ARE FOLDED UP [AND LAID AWAY]. GEMARA. A tanna taught: The basket referred to is the basket of figs, not of grapes.  It was taught: He who vows [abstinence] from summer fruits, is forbidden only figs. R. Simeon b. Gamaliel said: Grapes are include din figs.  What is the reason of the first Tanna? He holds that figs are plucked off by hand, whilst grapes are not plucked off by hand;  whereas R. Simeon b. Gamaliel maintains, Grapes too are plucked off by hand when quite ripe. UNTIL THE SUMMER [HARVEST] IS PAST,' [IT MEANS] UNTIL THE KNIVES ARE FOLDED UP [AND LAID AWAY]. A Tanna taught: Until most of the knives have been put away.