Exodus 18:2

אחר שלוחיה AFTER HIS HAVING SENT HER AWAY — When God said to him in Midian, (Exodus 4:19, 20) “Go, return to Egypt … and Moses took his wife and his sons etc…. and Aaron went forth towards him and met him at the Mount of God”, he (Aaron) said to him, “Who are these?” He answered him, “This is my wife whom I married in Midian and these are my children”. He, thereupon, asked him, “Whither are you taking them?” He replied, “To Egypt”. Where-upon he said to him, “We have cause to grieve over the former ones (the Israelites already there), and you propose to add to their number!” Moses therefore said to her, “Return to your father’s house” — she took her two sons and went away (Mekhilta).

וַיִּקַּ֗ח יִתְרוֹ֙ חֹתֵ֣ן מֹשֶׁ֔ה אֶת־צִפֹּרָ֖ה אֵ֣שֶׁת מֹשֶׁ֑ה אַחַ֖ר שִׁלּוּחֶֽיהָ׃

then Yitro, Moshe’s father in law, took Żippora, Moshe’s wife, after he had sent her back,