Bo: Rivah: Mitzvah 13 – Concept 410
“You shall not eat it (the Pesach Offering) partially roasted or cooked in water.” (Exodus 12:9) We are prohibited from eating the Pesach offering raw or boiled. (Rambam, Hilchot Korban Pesach)
The Hebrew word for raw is “na,” as in “Heinee,” as in, “But if her father restrained her.” (Numbers 30:6) The meat is raw because the person restrained himself and was not fully committed to cooking the offering. This is a reflection of anytime we fulfill a Mitzvah without complete commitment, when we refrain from steeping ourselves in our service of God.
The restrained me is not acceptable for this offering, as any Mitzvah performed with restraint is not acceptable. (Riva)