"And Jacob was left alone." Rabbi Eleazar said: This teaches that he stayed behind for some small jars. From here we learn that the possessions of the righteous are more precious to them than their own bodies. And why so much? Because they do not stretch out their hands to robbery. "And a man wrestled with him until the breaking of the dawn." Rabbi Yitzchak said: From here we learn that a disciple of the wise should not go out alone at night. Rabbi Abba bar Kahana said: We learn it from here - "Behold, he winnows barley at the threshing floor tonight" (Ruth 3:2). Rabbi Abbahu said: We learn it from here - "And Abraham rose early in the morning and saddled his donkey" (Genesis 22:3). And the Rabbis say: We learn it from here - "Go now, see whether it is well with your brothers and well with the flock" (Genesis 37:14). (Chullin 91b)
The Righteous Guard Their Possessions and Do Not Go Out Alone at Night
Yalkut Shimoni on Torah 132:3
וַיִּוָּתֵר יַעֲקֹב לְבַדּוֹ, אָמַר רַבִּי אֶלְעָזָר מְלַמֵּד שֶׁנִּשְׁתַּיֵּר עַל פַּכִין קְטַנִים מִכָּאן לַצַּדִּיקִים שֶׁחָבִיב עֲלֵיהֶם מָמוֹנָם יוֹתֵר מִגּוּפָן. וְכָל כַּךְ לָמָּה, לְפִי שֶׁאֵין פּוֹשְׁטִין יְדֵיהֶם בְּגֶזֶל. וַיֵּאָבֵק אִישׁ עִמּוֹ עַד עֲלוֹת הַשָּׁחַר. אָמַר רַבִּי יִצְחָק, מִכָּאן לְתַלְמִיד חָכָם שֶׁאַל יֵצֵא יְחִידִי בַּלַּילָה רַבִּי אַבָּא בַּר כַּהֲנָא אָמַר, מֵהָכָא, (רות ג, ב) "הִנֵּה הוּא זֹרֶה אֶת גֹּרֶן הַשְּׂעֹרִים הַלָּיְלָה" רַבִּי אַבָּהוּ אָמַר, מֵהָכָא, "וַיַּשְׁכֵּם אַבְרָהָם בַּבֹּקֶר וַיַּחֲבֹשׁ אֶת חֲמֹרוֹ" וְרַבָּנָן אַמְרִין מֵהָכָא, (בראשית לז, יד) "לֶךְ נָא רְאֵה אֶת שְׁלוֹם אַחֶיךָ וְאֶת שְׁלוֹם הַצֹּאן". (חולין צא, ב).