Exodus 34:25

25 You shall not offer the blood of my sacrifice with leaven, and the sacrifice of the festival of the passover shall not be left until the morning.

Exodus 34:25 In-Context

23 Three times in the year all your males shall appear before the Lord God, the God of Israel.
24 For I will cast out nations before you, and enlarge your borders; no one shall covet your land when you go up to appear before the Lord your God three times in the year.
25 You shall not offer the blood of my sacrifice with leaven, and the sacrifice of the festival of the passover shall not be left until the morning.
26 The best of the first fruits of your ground you shall bring to the house of the Lord your God. You shall not boil a kid in its mother's milk.
27 The Lord said to Moses: Write these words; in accordance with these words I have made a covenant with you and with Israel.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.