Chametz should not be seen in your domain seven days

This mitzvah forbids having chametz visible in one’s property during the seven days of Passover. It is not enough to avoid eating chametz — the Torah requires its complete removal from sight and possession. This obligation is fulfilled through bi’ur chametz (destruction) and bitul chametz (nullification), symbolizing both the physical and spiritual removal of arrogance, often likened to leaven. These words in the pasuk [chometz and s'or] are not two separate prohibitions with separate content, but rather one and the same idea. The Sages said this explicitly: "The verse begins with chometz and ends with s'or. This teaches you that chometz and s'or are the same." The intention of this statement: there is no difference between the s'or itself and that which it made into chometz. [I.e., both are included in this one prohibition].

Commentary & Classical Explanation:

• Rambam (Hilchot Chametz U’Matzah 2:2): Teaches that one who leaves chametz visible in his possession transgresses, even if he does not eat it.
• Sefer HaChinuch (Mitzvah 13): The root is to fully distance ourselves from chametz, ensuring that the lessons of matzah — humility and faith — are central during the festival.
• Talmud (Pesachim 5b): Explains that Torah law forbids chametz both in eating and in ownership, emphasizing its complete rejection.