Gitin5: 6
לֹא הָיָה סִיקְרִיקוֹן בִּיהוּדָה בַּהֲרוּגֵי הַמִּלְחָמָה. מֵהֲרוּגֵי הַמִּלְחָמָה וְאֵילָךְ, יֶשׁ בָּהּ סִיקְרִיקוֹן. כֵּיצַד? לָקַח מִסִּיקְרִיקוֹן, וְחָזַר וְלָקַח מִבַּעַל הַבַּיִת — מִקָּחוֹ בָטֵל; מִבַּעַל הַבַּיִת, וְחָזַר וְלָקַח מִסִּיקְרִיקוֹן — מִקָּחוֹ קַיָּם. לָקַח מִן הָאִישׁ, וְחָזַר וְלָקַח מִן הָאִשָּׁה — מִקָּחוֹ בָטֵל; מִן הָאִשָּׁה, וְחָזַר וְלָקַח מִן הָאִישׁ — מִקָּחוֹ קַיָּם. זוֹ מִשְׁנָה רִאשׁוֹנָה.  בֵּית דִּין שֶׁל אַחֲרֵיהֶם אָמְרוּ: הַלּוֹקֵחַ מִסִּיקְרִיקוֹן נוֹתֵן לַבְּעָלִים רְבִיעַ. אֵימָתַי? בִּזְמַן שֶׁאֵין בְּיָדָן לִקַּח. אֲבָל יֵשׁ בְּיָדָן לִקַּח — הֵן קוֹדְמִין לְכָל אָדָם.  רַבִּי הוֹשִׁיב בֵּית דִּין, וְנִמְנוּ שֶׁאִם שָׁהֲתָה בִּפְנֵי סִיקְרִיקוֹן שְׁנֵים עָשָׂר חֹדֶשׁ — כָּל הַקּוֹדֵם לִקַּח זוֹכֶה, אֲבָל נוֹתֵן לַבְּעָלִים רְבִיעַ.
There were no extortionists of land in Judea in [the time of] those slain at war. From [the time of] the slain at war and onward, there are extortionists there. How? [If] one bought from the extortionist, and then bought from the owner, his purchase is void; from the owner, and then from the extortionist, his purchase is valid. [If] he bought from the husband, and then bought from the wife, his purchase is void; from the wife, and then from the husband, his purchase is valid. This is the original ruling.  The court that came after them said: One who buys from an extortionist gives the owner one-fourth. When [is this]? When they do not have [with what] to buy. But if they have [with what] to buy, they take precedence over any person.  Rabbi convened a court, and they voted and enacted that if it remained with the extortionist twelve months, whoever is first to buy it acquires [it], but he gives the owner one-fourth.