Comentário sobre Arachin 8:2
אָמַר אֶחָד, הֲרֵי הִיא שֶׁלִּי בְעֶשֶׂר סְלָעִים, וְאֶחָד אוֹמֵר בְּעֶשְׂרִים, וְאֶחָד אוֹמֵר בִּשְׁלשִׁים, וְאֶחָד אוֹמֵר בְּאַרְבָּעִים, וְאֶחָד אוֹמֵר בַּחֲמִשִּׁים. חָזַר בּוֹ שֶׁל חֲמִשִּׁים, מְמַשְׁכְּנִין מִנְּכָסָיו עַד עָשֶׂר. חָזַר בּוֹ שֶׁל אַרְבָּעִים, מְמַשְׁכְּנִין מִנְּכָסָיו עַד עָשֶׂר. חָזַר בּוֹ שֶׁל שְׁלשִׁים, מְמַשְׁכְּנִין מִנְּכָסָיו עַד עָשֶׂר. חָזַר בּוֹ שֶׁל עֶשְׂרִים, מְמַשְׁכְּנִים מִנְּכָסָיו עַד עָשֶׂר. חָזַר בּוֹ שֶׁל עֶשֶׂר, מוֹכְרִים אוֹתָהּ בְּשָׁוְיָהּ וְנִפְרָעִים מִשֶּׁל עֶשֶׂר אֶת הַמּוֹתָר. הַבְּעָלִים אוֹמְרִים בְּעֶשְׂרִים, וְכָל אָדָם אוֹמְרִים בְּעֶשְׂרִים, הַבְּעָלִים קוֹדְמִים, מִפְּנֵי שֶׁהֵן מוֹסִיפִין חֹמֶשׁ:
Se um dissesse: "Eu o comprarei por dez selaim " e outro, "[por] vinte", e outro "por trinta", e outro "por quarenta", e outro "por cinquenta" - se ele [essa oferta] cinquenta renegados, tomam promessas de sua propriedade até dez selaim . Se ele [recusou] essa oferta, quarenta deles renunciaram, eles assumiram compromissos de sua propriedade até dez selaim . Se ele [renunciou a essa oferta] trinta renegados, eles tomam promessas de sua propriedade até dez selaim . Se aquele que fez a oferta de vinte renegados, eles se comprometem com sua propriedade até dez selaim . Se aquele que oferece dez renegados, eles vendem [o campo] pelo que vale, e coletam o que resta daquele que oferece dez. Se o proprietário oferece vinte e qualquer outro homem oferece vinte, então o proprietário vem primeiro, porque ele deve adicionar um quinto.
Bartenura on Mishnah Arakhin
English Explanation of Mishnah Arakhin
In this imaginative scenario there is initially a bidding war for the field, each person upping the previous bid by ten selas. Finally, the bid is won by the person who bid 50 selas. Then all of the bidders begin to renege. The mishnah delineates how the Temple deals with this situation. Notethe idea is that the Temple should collect the highest bid, but that all of those who bid should have to pay something. Basically the Temple takes a pledge from each person equivalent to the amount that he upped the previous bid ten selas. When they get to the last person, they simply sell the field and then take from him the difference between ten and the sale price. In this way, the Temple collects fifty selas, but no more than fifty selas.
English Explanation of Mishnah Arakhin
If the owner and another person put forth the same bid, the owner's bid is accepted because he must add an extra fifth. In this way the Temple maximizes its profits.