Pirkei Avot 5
בַּעֲשָׂרָה מַאֲמָרוֹת נִבְרָא הָעוֹלָם. וּמַה תַּלְמוּד לוֹמַר, וַהֲלֹא בְמַאֲמָר אֶחָד יָכוֹל לְהִבָּרְאוֹת, אֶלָּא לְהִפָּרַע מִן הָרְשָׁעִים שֶׁמְּאַבְּדִין אֶת הָעוֹלָם שֶׁנִּבְרָא בַעֲשָׂרָה מַאֲמָרוֹת, וְלִתֵּן שָׂכָר טוֹב לַצַּדִּיקִים שֶׁמְּקַיְּמִין אֶת הָעוֹלָם שֶׁנִּבְרָא בַעֲשָׂרָה מַאֲמָרוֹת
With ten utterances the world was created. And what does this teach, for surely it could have been created with one utterance? But this was so in order to punish the wicked who destroy the world that was created with ten utterances, And to give a good reward to the righteous who maintain the world that was created with ten utterances.
.בֶּן בַּג בַּג אוֹמֵר, הֲפֹךְ בָּהּ וַהֲפֹךְ בָּהּ, דְּכֹלָּא בָהּ. וּבָהּ תֶּחֱזֵי, וְסִיב וּבְלֵה בָהּ, וּמִנַּהּ לֹא תָזוּעַ, שֶׁאֵין לְךָ מִדָּה טוֹבָה הֵימֶנָּה:
Ben Bag Bag said: Turn it over, and turn it over, for all is therein. And look into it; And become gray and old therein; And do not move away from it, for you have no better portion than it.
בֶּן הֵא הֵא אוֹמֵר, לְפוּם צַעֲרָא אַגְרָא
Ben He He said: According to this labor is the reward.
this is the reward
all is therein