עַל־כֵּ֗ן קָרָ֛א לַמָּק֥וֹם הַה֖וּא בְּאֵ֣ר שָׁ֑בַע כִּ֛י שָׁ֥ם נִשְׁבְּע֖וּ שְׁנֵיהֶֽם׃
Wherefore that place was called Beer-sheba; because there they swore both of them.
Find Mishnaic references to Genesis 21:31: , passages from the 63 tractates of the Mishnah.