וַיֵּצֵ֥א מֹשֶׁ֛ה וְאַהֲרֹ֖ן מֵעִ֣ם פַּרְעֹ֑ה וַיִּצְעַ֤ק מֹשֶׁה֙ אֶל־יְהוָ֔ה עַל־דְּבַ֥ר הַֽצְפַרְדְּעִ֖ים אֲשֶׁר־שָׂ֥ם לְפַרְעֹֽה׃
And Moses and Aaron went out from Pharaoh; and Moses cried unto the LORD concerning the frogs, which He had brought upon Pharaoh.
Read halakhic rulings (Jewish law) on Exodus 8:8: and classical halakhic sources.