הֲכֹ֣ל הַיּ֔וֹם יַחֲרֹ֥שׁ הַחֹרֵ֖שׁ לִזְרֹ֑עַ יְפַתַּ֥ח וִֽישַׂדֵּ֖ד אַדְמָתֽוֹ׃
Is the plowman never done with plowing to sow, With the opening and harrowing of his ground?
Read halakhic rulings (Jewish law) on Isaiah 28:24: and classical halakhic sources.