Sukkah 6A

היה לבוש כליו וסנדליו ברגליו וטבעותיו באצבעותיו ⁠— הוא טמא מיד, והן טהורים עד שישהה בכדי אכילת פרס, פת חטין ולא פת שעורין, מיסב ואוכל בליפתן.

However, if he was dressed in his clothes, and his sandals were on his feet, and his rings were on his fingers, he immediately becomes ritually impure, but they, the clothes, sandals, and rings, remain pure until he stays in the house long enough to eat half a loaf of bread. This calculation is based on wheat bread, which takes less time to eat, and not on barley bread, and it relates to one who is reclining and eating it together with relish or a condiment, which hastens the eating. This is a Torah measurement connected specifically to wheat.

שעורה ⁠— דתנן: עצם כשעורה ⁠— מטמא במגע ובמשא, ואינו מטמא באהל.

Barley is also used as a basis for measurements, as we learned in a Mishnah: A bone from a corpse the size of a grain of barley imparts ritual impurity through contact and by being carried, but it does not impart impurity by means of a tent, i.e., if the bone was inside a house, it does not render all the articles in the house ritually impure.

גפן ⁠— כדי רביעית יין לנזיר.

The halakhic measure determined by a vine is the quantity of 1/4th-log of wine for a nazirite. A nazirite, for whom it is prohibited to drink wine, is liable to be flogged if he drinks that measure.

תאנה ⁠— כגרוגרת להוצאת שבת.

Fig alludes to the measure of a dried fig-bulk with regard to the halakhot of carrying out on Shabbat. One is liable for carrying food fit for human consumption on Shabbat, provided that he carries a dried fig-bulk of that food.

רמון ⁠— דתנן: כל כלי בעלי בתים ⁠— שיעורן כרמונים.

Pomegranate teaches the following measure, as we learned in a Mishnah: All ritually impure wooden vessels belonging to ordinary homeowners become pure through being broken, as broken vessels cannot contract or maintain ritual impurity. They are considered broken if they have holes the size of pomegranates.