(Mishnah): If a widow's Kesuvah was 200 Dinarim and she sold property of the orphans that was worth 100 for 200, or property worth 200 for 100, in either case she has received her full Kesuvah;

If her Kesuvah was 100, and she sold property worth 101 for 100, the sale is void, even if she says that she will return the extra Dinar.

(Gemara) Question: Granted, [if she sold property] worth 100 for 200 [she received her full Kesuvah. Why do we say so when she sold property] worth 200 for 100? (She is still owed 100!)

Answer: In any case she caused the orphans to lose 100 (it is considered that she took 200 from them).

Question: [When she sold property] worth 100 for 200, will [the sale] not be retracted due to Mekach Ta'os (the buyer overpaid! Why is this considered payment?)

Answer #1: The case is, the sold property rose in value (it is now worth 200).

Answer #2 (R. Avin): This supports Reish Lakish;

(Reish Lakish): Ona'ah (overcharging) never applies [to a sale of land].

(R. Yochanan): If the price was far (the overcharge was as much as the value), there is Ona'ah.

Question (against R. Yochanan - Mishnah): The following matters, Ona'ah does not apply to them - slaves, documents, land and Hekdesh.

Answer: That is when [the overcharge] is not far (even though it is more than a sixth, the Shi'ur of Ona'ah for Metaltelim).

If one redeemed [property] worth 100 for 200 - R. Yochanan says that it is not redeemed (it is a Mekach Ta'os, for the Ona'ah is too much), and Reish Lakish says that it is redeemed.

Question #1 (against R. Yochanan - Beraisa): If one said 'this Talis is [Hekdesh] in place of this donkey', [the donkey] becomes Chulin (even if it is worth much more than the Talis)!

Question #2 (against Reish Lakish - Seifa): One must appraise them. (If the Talis is worth more, this is fine. If the donkey is worth more, he must add to Hekdesh the difference.)

Answer (for Reish Lakish - R. Yosi): The entire [Beraisa is one teaching. It is redeemed, for Ona'ah does not apply, but even so] one must appraise them.

Question: (All agree that if the donkey is worth more, he must add to Hekdesh the difference, and then it is redeemed.) What do they argue about?

Answer: [If one redeemed Hekdesh for half its value and used it, must he] bring a [Korban] Me'ilah? R. Yochanan says that he brings a Korban Me'ilah, and Reish Lakish says that he does not bring a Korban Me'ilah.