Exodus 2:21

ויואל — Translate this as the Targum does: AND HE WAS WILLING. Similar are: (Judges 19:6) “Be content (הואל), I pray thee, and tarry all night”; (Joshua 7:7) “would that we had been content (הואלנו)”; (Genesis 18:31) “I am content (הואלתי) to speak”. A Midrashic explanation is that it has the sense of taking an oath (אלה), so that it should be rendered, “And Moses pledged himself by an oath to remain with the man” — he swore to him that he would not stir from Midian save by his permission (cf. Exodus 4:18) (Nedarim 65a).

וַיּ֥וֹאֶל מֹשֶׁ֖ה לָשֶׁ֣בֶת אֶת־הָאִ֑ישׁ וַיִּתֵּ֛ן אֶת־צִפֹּרָ֥ה בִתּ֖וֹ לְמֹשֶֽׁה׃

And Moshe was content to dwell with the man: and he gave Moshe Żippora his daughter.