אורח חיים רס״וOrach Chayim 266

Se’if 1א׳

מִי שֶׁהָיָה בָּא בַּדֶּרֶךְ וְקָדַשׁ עָלָיו הַיּוֹם וְהָיָה עִמּוֹ מָעוֹת וְיֵשׁ לוֹ חֲמוֹרוֹ וְגַם יֵשׁ עִמּוֹ עַכּוּ"ם, לֹא יַנִּיחַ כִּיסוֹ עַל חֲמוֹרוֹ, מִפְּנֵי שֶׁהוּא מְצֻוֶּה עַל שְׁבִיתָתוֹ, אֶלָּא נוֹתֵן כִּיסוֹ לְעַכּוּ"ם לְהוֹלִיכוֹ לוֹ, וּלְמוֹצָאֵי שַׁבָּת לוֹקְחוֹ מִמֶּנּוּ וַאֲפִלּוּ לֹא נָתַן לוֹ שָׂכָר עַל זֶה וְאַף עַל פִּי שֶׁנְּתָנוֹ לוֹ מִשֶּׁחָשְׁכָה, מֻתָּר; אֲבָל אִם מָצָא מְצִיאָה אֵינוֹ יָכוֹל לִתְּנָהּ לְעַכּוּ"ם אֶלָּא אִם כֵּן בָּאָה לְיָדוֹ מִבְּעוֹד יוֹם דְּהַשְׁתָּא הַוְיָא כְּכִיסוֹ.

The Laws Pertaining to a Person Who Was in the Midst of a Journey when Night Fell [on Friday], 13 Seifim: A person who is carrying money and is traveling on a journey and Shabbos is about to commence, if he has his donkey with him and he is also accompanied by a non-Jew he should not place his purse on the donkey, because he is commanded to have it (the donkey) rest on Shabbos. Instead, he should give it to the non-Jew to carry for him on Shabbos, and he takes it back from him at the conclusion of Shabbat. And even if he did not pay him a wage for this, and even though he gave it to him at nightfall, it is permitted. However, if he found an ownerless article, he cannot give it to the non-Jew even while it is still day, because this is like his purse.

Se’if 2ב׳

אִם אֵין עִמּוֹ עַכּוּ"ם, מַנִּיחוֹ עַל חֲמוֹרוֹ, וּכְדֵי שֶׁלֹּא יְהֵא חַיָּב מִשּׁוּם מְחַמֵּר (פי' מַנְהִיג אֶת הַחֲמוֹר) אִי אִיכָּא עֲקִירָה וְהַנָּחָה מַנִּיחוֹ לְאַחַר שֶׁעָקְרָה יָד וְרֶגֶל לָלֶכֶת, דְּלָאו עֲקִירָה הִיא, וּכְשֶׁהִיא עוֹמֶדֶת נוֹטְלוֹ הֵימֶּנָּה וּלְאַחַר שֶׁתַּחֲזֹר וְתַעֲקֹר רַגְלָהּ יַנִּיחֶנּוּ, וְיֵשׁ אוֹמְרִים שֶׁצָּרִיךְ לִזָּהֵר מִלְּהַנְהִיגָהּ בְּקוֹל רָם כָּל זְמַן שֶׁהַכִּיס עָלֶיהָ. הַגָּה: וְהוּא לֹא יִרְכַּב עַל הַחֲמוֹר, אֶלָּא יֵלֵךְ בְּרַגְלָיו. וְאִם הוּא צָרִיךְ לָצֵאת חוּץ לַתְּחוּם מִפְּנֵי שֶׁמִּתְיָרֵא מִן הַלִּסְטִים, אוֹ שְׁאָר סַכָּנָה וַאֲפִלּוּ הוּא תּוֹךְ הַתְּחוּם, יָכוֹל לִישֵׁב עַל הַחֲמוֹר וְלִרְכֹּב. (ריב"ש וּבֵית יוֹסֵף בְּשֵׁם תַּשְׁבֵּ"ץ).

If he is not accompanied by a non-Jew he should place his purse on his donkey. In order that he not violate the commandment to have his animal rest on Shabbos, he should place it on [the donkey] after it lifts its foreleg and hind leg to walk. This is not considered Akirah (uprooting or transferring). When it is standing, grab hold of the right, and remove the purse. After it lifts up its foreleg and hind leg to walk again, he should [once more] place [the article] on it. There are those who say that it is necessary to be careful regarding walking by a loud voice each time the purse is on it. Rema: He may not ride on the donkey; rather he should walk. If he must go out from the techum because of fear of robbers or other danger, and even if he is within the techum, he can sit on the donkey and ride (Rivash; Beis Yosef in the name of the Tashbatz)

Se’if 3ג׳

הָיָה עִמּוֹ חֲמוֹר וְחֵרֵשׁ שׁוֹטֶה וְקָטָן, יַנִּיחֶנּוּ עַל הַחֲמוֹר וְלֹא יִתְּנֶנָּה לְאֶחָד מֵאֵלּוּ.

If he has a donkey with him, and a deaf-mute, a mentally incompetent person and a minor, he should place it on the donkey and he should not give it to any of these (people).