וַיָּ֤שֶׂם הָעֶ֙בֶד֙ אֶת־יָד֔וֹ תַּ֛חַת יֶ֥רֶךְ אַבְרָהָ֖ם אֲדֹנָ֑יו וַיִּשָּׁ֣בַֽע ל֔וֹ עַל־הַדָּבָ֖ר הַזֶּֽה׃
Il servo pose la mano sotto la coscia d’Abramo suo padrone, e gli giurò intorno a questa cosa.
Targum Jonathan on Genesis
And the servant put his hand upon the circumcised part of Abraham his lord, and sware to him according to this thing.