Deuteronomy 16:3-4

16:3 You must not eat any yeast with it; for seven days you must eat bread made without yeast, symbolic of affliction, for you came out of Egypt hurriedly. You must do this so you will remember for the rest of your life the day you came out of the land of Egypt. 16:4 There must not be a scrap of yeast within your land ¹  for seven days, nor can any of the meat you sacrifice on the evening of the first day remain until the next morning. ² 

Deuteronomy 16:8

16:8 You must eat bread made without yeast for six days. The seventh day you are to hold an assembly for the Lord your God; you must not do any work on that day. ³ 

[16:4]  ¹ tn Heb “leaven must not be seen among you in all your border.”

[16:4]  ² tn Heb “remain all night until the morning” (so KJV, ASV). This has been simplified in the translation for stylistic reasons.

[16:8]  ³ tn The words “on that day” are not in the Hebrew text; they are supplied in the translation for clarification (cf. TEV, NLT).