You shall not eat leaven with it; seven days you shall eat with it matzos, the bread of affliction, for in haste you went out of the land of Egypt, in order that you may remember the day of your going out of the land of Egypt all the days of your life.
English: "You shall not eat leaven with it" — It was taught: From where do we know that one who eats chametz on the eve of Pesach from the sixth hour onward violates a negative commandment? From the verse "you shall not eat leaven with it."
On the daf / in context: The prohibition of chametz begins already on the afternoon of the 14th, concurrent with the time of the Pesach slaughter.
Type of Learning
Derash on the verse (Pesachim) — chametz is forbidden from midday on the 14th.
What Is Learned
Eating chametz from the sixth hour of the day on the eve of Pesach violates a negative commandment.