וְלֹֽא־תִקְח֥וּ כֹ֙פֶר֙ לְנֶ֣פֶשׁ רֹצֵ֔חַ אֲשֶׁר־ה֥וּא רָשָׁ֖ע לָמ֑וּת כִּי־מ֖וֹת יוּמָֽת׃
犯了該死之罪的殺人者，你們不可收取贖價來救他的性命，他必須被處死。
Shenei Luchot HaBerit
In some instances one scholar may see as many as three distinct negative commandments involving the consumption of חמץ, leavened things, whereas another scholar considers that there is only a single culpability for all of these prohibitions of חמץ, be it before Passover, during Passover, or after Passover. Even such universally known precepts as the recital of קריאת שמע, are subject to debate, one Rabbi claiming it is a Biblical precept, another saying that it is merely a Rabbinic injunction.