Литература Второго Храма к Берешит 16:1

וְשָׂרַי֙ אֵ֣שֶׁת אַבְרָ֔ם לֹ֥א יָלְדָ֖ה ל֑וֹ וְלָ֛הּ שִׁפְחָ֥ה מִצְרִ֖ית וּשְׁמָ֥הּ הָגָֽר׃

Сейчас Сара Абрам'жена не родила ему детей; и у нее была служанка, египтянин, которую звали Агарь.

The Midrash of Philo

Why it was that Sarah, the wife of Abraham, bore him no children? (Genesis 16:1).

The Midrash of Philo

What is the meaning of the statement, she had an Egyptian handmaid whose name was Hagar? (Genesis 16:1).

On Mating with the Preliminary Studies

The subject of this treatise is Gen. 16:1–6 with some omissions.