Jerusalem Talmud Shevuot 8.4

משנה: אָמַר לַשּׁוֹאֵל אֵיכָן שׁוֹרִי אָמַר לוֹ מֵת וְהוּא שֶׁנִּשְׁבַּר אוֹ נִשְׁבָּה אוֹ נִגְנַב אוֹ אָבַד. נִשְׁבַּר וְהוּא שֶׁמֵּת אוֹ נִשְׁבָּה אוֹ נִגְנַב אוֹ אָבַד. נִשְׁבָּה וְהוּא שֶׁמֵּת אוֹ נִשְׁבַּר אוֹ נִגְנַב אוֹ אָבַד. נִגְנַב וְהוּא שֶׁמֵּת אוֹ נִשְׁבַּר אוֹ נִשְׁבָּה אוֹ אָבַד. אָבַד וְהוּא שֶׁמֵּת אוֹ נִשְׁבַּר אוֹ נִשְׁבָּה אוֹ נִגְנַב. מַשְׁבִּיעֲךָ אֲנִי וְאָמַר אָמֵן פָּטוּר: אֵיכָן שׁוֹרִי אָמַר לוֹ אֵינִי יוֹדֵעַ מָה אַתָּה שָׂח וְהוּא שֶׁמֵּת אוֹ נִשְׁבַּר אוֹ נִשְׁבָּה אוֹ נִגְנַב אוֹ אָבַד. מַשְׁבִּיעֲךָ אֲנִי וְאָמַר אָמֵן חַיָיב. אָמַר לְנוֹשֵׂא שָׂכָר וְהַשּׂוֹכֵר אֵיכָן שׁוֹרִי אָמַר לוֹ מֵת וְהוּא שֶׁנִּשְׁבַּר אוֹ נִשְׁבָּה. נִשְׁבַּר וְהוּא שֶׁמֵּת אוֹ נִשְׁבָּה. נִשְׁבָּה וְהוּא שֶׁמֵּת אוֹ נִשְׁבַּר. נִגְנַב וְהוּא שֶׁאָבַד. אָבַד וְהוּא שֶׁנִּגְנַב. מַשְׁבִּיעֲךָ אֲנִי וְאָמַר אָמֵן פָּטוּר. מֵת אוֹ נִשְׁבַּר אוֹ נִשְׁבָּה וְהוּא שֶׁנִּגְנַב אוֹ אָבַד. מַשְׁבִּיעֲךָ אֲנִי וְאָמַר אָמֵן חַיָיב. אָבַד אוֹ נִגְנַב וְהוּא שֶׁמֵּת אוֹ נִשְׁבַר אוֹ נִשְׁבָּה פָּטוּר. זֶה הַכְּלָל כָּל הַנִּשְׁבָּע לְהָקֵל עַל עַצְטוֹ חַיָיב. לְהַחְמִיר עַל עַצְמוֹ פָּטוּר.

MISHNAH: He said to the borrower, “where is my ox?” He told him, “it died,” but it broke, or was abducted, or stolen, or lost. “It broke,” but it died, or was abducted, or stolen, or lost. “ ”It was abducted,” but it died, or broke, or was stolen, or lost. “It was stolen,” but it died, or broke, or was abducted, or lost. “It was lost,” but it died, or broke, or was abducted, or stolen. “I want you to swear;” he answered “Amen”. He is not liable. “Where is my ox?” He told him, “I do not know.” “What are you telling?” But if had died, or broke, or was abducted, or stolen, or lost. “I want you to swear;” he answered “Amen”. He is liable. He said to the recipient of a fee or to a renter, “where is my ox?” He told him, “it died,” but it broke or was abducted; “it broke,” but it died or was abducted; “it was abducted,” but it died or broke; “it was stolen,” but it was lost; “it was lost,” but it was stolen. “I want you to swear;” if he said “Amen”, he is not liable. “It died, or it broke, or it was abducted,” when it was stolen or lost. “I want you to swear;” if he said “Amen”, he is liable. “It was lost, or stolen,” when it died, or broke, or was abducted; he is not liable. This is the principle: Anybody who swears to his benefit is liable, to his detriment is not liable.

הלכה: תַּנֵּי. לֹא לְהָקֵל וְלֹא לְהַחֲמִיר חַיָיב. אָמַר רִבִּי. מַתְנִיתָא אָמְרָה כֵן. אָמַר לַשּׁוֹאֵל אָמַר לְשׁוֹמֵר חִנָּם אָמַר לְנוֹשֵׂא שָׂכָר וְהַשּׂוֹכֵר. אֵיכָן שׁוֹרִי. אָמַר לוֹ. מֵת. מָהוּ שֶׁיֹּאמַר לוֹ. בּוֹא וְהִשָּׁבַע לִי שֶׁלֹּא נָתַתָּה עֵינֶיךָ בָהּ לְגוֹזְלָהּ. מִכָּל מָקוֹם אֵינוֹ מְשַׁלֵּם. מָהוּ דְיֵימַר לֵיהּ. אֲפִילוּ דְאַתְּ יְהַב לִי כַמָּה דִּידִי אֲנָא בָעֵי גַבָּךְ.

HALAKHAH: It was stated: If it was neither to his benefit nor to his detriment, he is liable. Rebbi said, a baraita says so: “If he said to the borrower, the unpaid trustee, the recipient of a fee, or the renter, ‘where is my ox?’ This one said, ‘it died.’” May he tell him, “come and swear to me that you never thought of rustling it”? In any case he would not pay; what could he say? “Even if you would pay me a lot, I want from you what is mine.”