וַיִּ֣פֶן פַּרְעֹ֔ה וַיָּבֹ֖א אֶל־בֵּית֑וֹ וְלֹא־שָׁ֥ת לִבּ֖וֹ גַּם־לָזֹֽאת׃
And Pharaoh turned and went into his house, neither did he lay even this to heart.
Read halakhic rulings (Jewish law) on Exodus 7:23 from the Mishneh Torah and classical halakhic sources, free online.