(Mishnah): If one deposited produce with his friend, when he returns them, he may deduct all regular losses from the produce -

For wheat and rice, he may deduct 9 half-kavim per kur (which is 180 kav); for barley or millet - 9 kav per kur; for spelt and flax - 3 sa'im per kur;

It is deducted according to the amount of produce and the season.

R. Yochanan ben Nuri: What does the mouse care? It eats the same amount whether from a large or a small amount of produce! Rather, he deducts the amount specified for one kur.

R. Yehudah: If it was a large quantity of produce, he does not deduct for losses as the produce expands.

For wine, he should deduct 1/6th.

R. Yehudah: 1/5th.

He should deduct 3 lug for every hundred lug of oil - 1 1/2 lug for dregs and 1 1/2 lug for absorption (of the barrel).

If it was purified oil, he does not deduct for dregs. If it had been held in old jugs, he does not deduct for absorption.

R. Yehudah: Even if a person sells purified oil throughout the year, the buyer must accept a deduction of 1 1/2 lug of dregs for every hundred lug.

(Gemara) - R. Ami: The Mishnah (that allowed deduction) is discussing when he was given it and when he returned it at the time of threshing. (However, if he returned it in the rainy season, he does not deduct, as the weather causes the produce to swell.)

Explaining the Tana Kama's opinion: They say in Bavel - These mice are evil, as when they see a large amount of produce, they call their friends to come and eat with them.

Explanation #2 (R. Yochanan): When they see a large amount, they waste and scatter more of it.

The Mishnah taught: For wine, he should deduct 1/6th. R. Yehudah says 1/5th. (Note: This ruling is not discussed in the Gemara - this next sentence is commenting on the ruling of the Mishnah that he deducts 3 lug for every hundred lug of oil, but if it was purified oil, he does not deduct for dregs.)

Rav Oshiyah: This deduction applies when he had not explicitly told him that he will be supplying purified oil, but if he had said this explicitly, he must supply purified oil without any deductions.