Commentary for Ezra 6:22

וַיַּֽעֲשׂ֧וּ חַג־מַצּ֛וֹת שִׁבְעַ֥ת יָמִ֖ים בְּשִׂמְחָ֑ה כִּ֣י ׀ שִׂמְּחָ֣ם יְהוָ֗ה וְֽהֵסֵ֞ב לֵ֤ב מֶֽלֶךְ־אַשּׁוּר֙ עֲלֵיהֶ֔ם לְחַזֵּ֣ק יְדֵיהֶ֔ם בִּמְלֶ֥אכֶת בֵּית־הָאֱלֹהִ֖ים אֱלֹהֵ֥י יִשְׂרָאֵֽל׃ (פ)

and kept the feast of unleavened bread seven days with joy; for the LORD had made them joyful, and had turned the heart of the king of Assyria unto them, to strengthen their hands in the work of the house of God, the God of Israel.

Rashi on Ezra