Deuteronomy 16:4
and there is not seen with thee leaven in all thy border seven days, and there doth not remain of the flesh which thou dost sacrifice at evening on the first day till morning.
Exodus 12:10
and ye do not leave of it till morning, and that which is remaining of it till morning with fire ye do burn.
Exodus 34:25
'Thou dost not slaughter with a fermented thing the blood of My sacrifice; and the sacrifice of the feast of the passover doth not remain till morning:
Exodus 13:7
unleavened things are eaten the seven days, and any thing fermented is not seen with thee; yea, leaven is not seen with thee in all thy border.
Exodus 12:15
Seven days ye eat unleavened things; only -- in the first day ye cause leaven to cease out of your houses; for any one eating anything fermented from the first day till the seventh day, even that person hath been cut off from Israel.
Exodus 12:8
'And they have eaten the flesh in this night, roast with fire; with unleavened things and bitters they do eat it;