Menachos 2:5-3:1

Menachos 2:5

If he had an intention that renders piggul while the burning the handful but not while burning the frankincense, or while burning the frankincense but not while burning the incense, Rabbi Meir says the offering is piggul and he incurs kareis because of it; the Sages say that there is no kareis unless he had an intention that renders piggul during the service of the entirety of the matir (that which renders the sacrifice permitted, i.e., the handful with the frankincense). The Sages agree with Rabbi Meir when it comes to the flour offering of a sinner or of jealousy (i.e., the sotah) that if he had an intention that renders piggul during the handful, then the offering is piggul and he incurs kareis for it since the handful is the whole matir (these offerings not including frankincense). Rabbi Meir says that if the kohein slaughtered one of the Shavuos lambs intending to eat the two loaves the next day, or if he burned one of the dishes of showbread frankincense intending to eat the two rows of showbread the next day, the flour offering is piggul and he incurs kareis because of it; the Sages say that it is not piggul unless he had a disqualifying intention during the service of the entirety of the matir (i.e., both lambs or both dishes of frankincense, respectively). If he slaughtered one of the lambs intending to eat from it the next day, that lamb is piggul and the other remains fit; if he intended to eat from the other lamb the next day, then both remain fit.

Menachos 3:1

If the kohein took the handful of a flour offering intending to eat something not normally eaten outside of an appropriate time or place, or to burn something not normally burned outside of an appropriate time or place, the offering is valid; Rabbi Eliezer says it is invalid. If he intended to eat less than an olive-sized portion of something that is normally eaten or to burn less than an olive-sized portion of something that is normally burned in an improper time or place, the offering remains valid. If he intended to eat a half of an olive-sized portion and to burn a half of olive-sized portion in an improper time or place, the offering remains valid because the volumes of eating and burning do not combine.