Tractate Menachot - Chapter 2 - Mishnah 5 מנחות פרק ב׳ משנה ה׳

If he had an intention which makes piggul [with regard to the remainder of the minhah] during the [burning of the] handful and not during the [burning of the] frankincense, or during the [burning of the] frankincense and not during the [burning of the] incense: Rabbi Meir says: it is piggul and he is liable for karet for it; But the sages say: there is no karet unless he had an intention that makes piggul during the service of the whole of the mattir. The sages agree with Rabbi Meir with regard to a sinner’s minhah or a minhah of jealousy, that if he had an intention which makes piggul during the [burning of the] handful, [the remainder] is piggul and he is liable for karet for it, since the handful is the entire mattir. If he slaughtered one of the lambs intending to eat the two loaves the next day, or if he burned one of the dishes of frankincense intending to eat the two rows [of the showbread] on the next day: Rabbi Meir says: it is piggul and he is liable for karet for it; But the sages say: it is not piggul, unless he had an intention that makes piggul during the service of the whole of the mattir. If he slaughtered one of the lambs intending to eat part of it the next day, that [lamb] is piggul but the other [lamb] is valid. If he intended to eat the other [lamb] the next day, both are valid.