וְגִדְע֣וֹן בָּ֗א וַיַּ֤עַשׂ גְּדִֽי־עִזִּים֙ וְאֵיפַת־קֶ֣מַח מַצּ֔וֹת הַבָּשָׂר֙ שָׂ֣ם בַּסַּ֔ל וְהַמָּרַ֖ק שָׂ֣ם בַּפָּר֑וּר וַיּוֹצֵ֥א אֵלָ֛יו אֶל־תַּ֥חַת הָאֵלָ֖ה וַיַּגַּֽשׁ׃ (ס)
Rashi on Judges
Matzos containing flour. We learn that it was Pesach, the day the Omer offering was waved.12On the second day of Pesach. (Vayikra, 23:11) This is why it is said,13Below, 7:13. "Behold, a toasted barley bread was careening,14 “… into the camp of Midyon. It reached the tent and struck it down.” This was in the merit of the Omer offering (Rashi, there, Yalkut, 62), which was made of barley. etc."