Mishneh Torah — Negative Mitzvot מצוות לא תעשה, Chapter 147

שלא לאכול בשר קודשים קלים קודם זריקת דמים, שנאמר "לא תוכל . . . ונדבותיך" (דברים יב,יז); כלומר, לא תוכל לאכול נדבותיך עד שייזרק דמם.

Not to eat the meat of sacrifices of a lesser order of holiness before the sprinkling of their blood, as [Deuteronomy, ibid.] states: "You may not [eat]... the [animals] you have pledged [to bring as sacrifices]..." - i.e., you are not allowed to eat from the sacrifices you have pledged until their blood has been sprinkled.