You shall not immolate the blood of my victim over leaven; and there shall not remain, in the morning, any of the victim of the Solemnity of the Passover.
And what may remain until morning, of the consecrated flesh or of the bread, you shall burn these remnants with fire. These shall not be eaten, because they have been sanctified.
He spoke another parable to them: "The kingdom of heaven is like leaven, which a woman took and hid in three measures of fine wheat flour, until it was entirely leavened."
You shall not eat it with leavened bread. For seven days you shall eat, without leaven, the bread of affliction. For you departed from Egypt in fear. So may you remember the day of your departure from Egypt, throughout all the days of your life.
No leaven shall be present in all your confines for seven days. And by morning, there shall not remain any of the flesh which was immolated on the first day in the evening.