Mishnayos Menachos Perek 3 Mishnah 1

In the case of one who removes a handful from the meal offering with the intent to consume, beyond its designated time, an item whose typical manner is such that one does not consume it, i.e., the handful, or to burn, beyond its designated time, an item whose typical manner is such that one does not burn it on the altar, i.e., the remainder of the meal offering, the meal offering is fit. Rabbi Eliezer deems it unfit, although it is not piggul, and consuming it is therefore not punishable by excision from the World-to-Come [karet]. In the case of one who removes a handful from the meal offering with the intent to consume, beyond its designated time, an item whose typical manner is such that one does consume it, or to burn, beyond its designated time, an item whose typical manner is such that one does burn it on the altar, but his intent was to consume or burn improperly less than an olive-bulk, the offering is fit. If his intent was both to consume half an olive-bulk and to burn half an olive-bulk beyond its designated time, the meal offering is nevertheless fit, because eating and burning do not join together.