וַיֹּ֨אמֶר אַבְרָ֜ם אֶל־שָׂרַ֗י הִנֵּ֤ה שִׁפְחָתֵךְ֙ בְּיָדֵ֔ךְ עֲשִׂי־לָ֖הּ הַטּ֣וֹב בְּעֵינָ֑יִךְ וַתְּעַנֶּ֣הָ שָׂרַ֔י וַתִּבְרַ֖ח מִפָּנֶֽיהָ׃
Da sprach Abram zu Sarai: Deine Magd ist ja in deiner Hand; tue mit ihr, was dir gut dünkt. Da quälte sie Sarai so, dass sie ihr entlief.
Rashi on Genesis
ותענה שרי AND SARAI AFFLICTED HER — She compelled her to work hard (Genesis Rabbah 45:6).
Ramban on Genesis
AND SARAI DEALT HARSHLY WITH HER, AND SHE FLED FROM BEFORE HER FACE. Our mother did transgress by this affliction, and Abraham also by his permitting her to do so. And so, G-d heard her [Hagar’s] affliction and gave her a son who would be a wild-ass of a man,359Verse 12 here. to afflict the seed of Abraham and Sarah with all kinds of affliction.
Sforno on Genesis
שפחתך בידך, for she has not been given her freedom by you who are her mistress.