Avot5: 3
עֲשָׂרָה נִסְיוֹנוֹת נִתְנַסָּה אַבְרָהָם אָבִינוּ עָלָיו הַשָּׁלוֹם וְעָמַד בְּכֻלָּם, לְהוֹדִיעַ כַּמָּה חִבָּתוֹ שֶׁל אַבְרָהָם אָבִינוּ עָלָיו הַשָּׁלוֹם.
[In] ten tests our father Abraham, peace be on him, was tested and he stood up to all of them. [This is] to make known how great is the endear- ment of our father Abraham, peace be on him.