Jerusalem Talmud Shabbat 16.9

משנה: נָכְרִי שֶׁהִדְלִיק אֶת הַנֵּר מִשְׁתַּמֵּשׁ לְאוֹרוֹ יִשְׂרָאֵל. וְאִם בִּשְׁבִיל יִשְׂרָאֵל אָסוּר. מִילָּא מַיִם לְהַשְׁקוֹת בְּהֶמְתּוֹ מַשְׁקֶה אַחֲרָיו יִשְׂרָאֵל וְאִם בִּשְׁבִיל יִשְׂרָאֵל אָסוּר. עָשָׂה גוֹי כֶּבֶשׁ לֵירֵד בּוֹ יוֹרֵד אַחֲרָיו יִשְׂרָאֵל וְאִם בִּשְׁבִיל יִשְׂרָאֵל אָסוּר. מַעֲשֶׂה בְרַבָּן גַּמְלִיאֵל וּזְקֵנִים שֶׁהָיוּ בָאִין בִּסְפִינָה וְעָשָׂה גוֹי כֶּבֶשׁ לֵירֵד בּוֹ וְיָרְדוּ בוֹ זְקֵנִים:

MISHNAH: If a Gentile lit a candle, the Jew may use its light; but if he did it for the Jew it is forbidden. If he drew water to let his animals drink, the Jew may let his animals drink, but if he did it for the Jew it is forbidden. If the Gentile built a ramp to descend on it, the Jew may descend after him, but if he did it for the Jew it is forbidden. It happened that Rabban Gamliel and the Elders arrived in a ship, the Gentile make the ramp to descend on it and the Elders descended on it.

הלכה: לְצוֹרְכוֹ וּלְצוֹרֶךְ יִשְׂרָאֵל. נִישְׁמְעִינָהּ מִן הָדָא. שְׁמוּאֵל אִיקְבַּל גַּבֵּי חַד פַּרְסִיי. אִיטְפֵּי בּוּצִינָא. אֲזַל הַהוּא פַרְסִיי בְּעָא מִדְלַקָתֵּיהּ. וַהֲפַךְ שְׁמוּאֵל אַפּוֹי. כֵּיוָן דַּחֲזִיתֵיהּ מִתְעַסֵּק בִּשְׁטָרוֹתָיו יְדַע דְּלָא בְגִינֵיהּ אַדְלְקָהּ. וַהֲפַךְ שְׁמוּאֵל אַפּוֹי. אָמַר רִבִּי יַעֲקֹב בַּר אָחָא. הָדָא אָמְרָה. לְצוֹרְכוֹ וּלְצוֹרֶךְ יִשְׂרָאֵל אָסוּר. אָמַר רִבִּי יוֹנָה. שַׁנְיָיא הִיא. שֶׁאֵין מַטְרִיחִין עַל הָאָדָם לָצֵאת מִבֵּיתוֹ. אָמַר רִבִּי אֱלִיעֶזֶר. מִשּׁוּם שֶׁאֵין מַטְרִיחִין עַל הָאָדָם לָצֵאת מִבֵּיתוֹ לָמָּה הֲפַךְ שְׁמוּאֵל אַפּוֹי.

HALAKHAH: For himself and for a Jew? Let us hear from the following. Samuel was received at a Persian’s. The light went out. The Persian went and wanted to light it; Samuel turned his face around. When he saw him occupied with his securities he knew that he did not light for him; Samuel again turned his face. Rebbi Jacob bar Aḥa said, this implies that for himself and for a Jew it is forbidden. Rebbi Jonah said, there is a difference since one does not bother a person to leave his house. Rebbi Eliezer said, if it is since one does not bother a person to leave his house, why did Samuel turn his face around?

אָמְרוּ לוֹ. מָה אָנוּ לֵירֵד. אָמַר לָהֶן. הוֹאִיל וְלֹא בִשְׁבִילֵינוּ עָשָׂה מוּתָּרִין אָנוּ לֵירֵד.

“They asked him, may we descend? He told them, since he did not do it for us we are permitted to descend.”