Tosefta do Wyjścia 38:9

The entire Temple Courtyard is suitable for eating from the most holy offerings, and for conducting sacrifices of lesser sanctity. But [as to] one who slaughters chullin within it -- it is forbidden to benefit from [that slaughter]. And [the equivalent of the Temple Courtyard] was the courtyard [surrounding the] Tent of Meeting that they had in the desert, from the hangings [separating the courtyard from the Tent of Meeting, see Ex. 38:9] and inward. All impure people that entered from the Gate of Nicanor and inward -- even those who have not [yet brought an] atonement [offering to complete their purification] -- behold, they are liable for excision [if they entered] intentionally, and for [bringing] a sin offering [if they entered] inadvertently, and needless to say, a tevul yom (one who has immersed himself but will remain impure until sunset) and all the rest of the impure people that entered within the partitions, behold they are subject to a warning, [but] if they entered into the Holy, behold they are liable. Rabbi Yehuda says, if they [presented themselves] before the Holy, [they are liable] for the death penalty, and the remainder of the Temple ("הבית" not "המת", see Or Ha'Ganuz) are subject to a warning.