Exodus 11:10

ומשה ואהרן עשו וגו׳ AND MOSES AND AARON DID etc. — It (Scripture) has already written this in the description of all the preceding wonders, and it repeats it here only in order to connect it with the chapter which comes after this (as giving a reason why the commands in the next chapter were given to Aaron as well as to Moses; cf. Rashi’s comment on the following verse).

וּמֹשֶׁ֣ה וְאַהֲרֹ֗ן עָשׂ֛וּ אֶת־כׇּל־הַמֹּפְתִ֥ים הָאֵ֖לֶּה לִפְנֵ֣י פַרְעֹ֑ה וַיְחַזֵּ֤ק יְהֹוָה֙ אֶת־לֵ֣ב פַּרְעֹ֔ה וְלֹֽא־שִׁלַּ֥ח אֶת־בְּנֵֽי־יִשְׂרָאֵ֖ל מֵאַרְצֽוֹ׃ {ס}        

And Moshe and Aharon did all these wonders before Par῾o: and the Lord hardened Par῾o’s heart, so that he would not let the children of Yisra᾽el go out of his land.