Mishneh Torah — Positive Mitzvot מצוות עשה, Chapter 77
The full Hebrew text of Mishneh Torah, Positive Mitzvot, Chapter 77, with English translation by Maimonides (Rambam).
להקריב המצורע קרבן אחר שיטהר, שנאמר: "וביום השמיני ייקח" (ויקרא יד,י).
For a person afflicted with tzara’at to offer a sacrifice after he becomes purified, as [Leviticus 14:1] states: "On the eighth day, he shall take...."