Exodus 13:6-8

Young's Literal Translation

⁶ `Seven days thou dost eat unleavened things, and in the seventh day [is] a feast to Jehovah;

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.

⁸ `And thou hast declared to thy son in that day, saying, `[It is] because of what Jehovah did to me, in my going out from Egypt,