הלכה על תרומות 3:12

From the laws of the commandment - that which they, may their memory be blessed, said (Mishnah Terumot 3:10) that if he transgressed and first did in this matter something that it is not fitting to do first, what is done is done, and we are not obligated to go back and mix everything and separate them a second time; so [too], what they expounded in Tractate Terumot (Mishnah Terumot 3:7) and in the Mekhilta d'Rabbi Yishmael 22:28, "'Its fullness,' those are the first-fruits that are taken from what is full," meaning to say, before he takes anything from the thing, [as] that is the expression of fullness, meaning to say it is completely full, "'and your offering,' that is the priestly tithe; 'do not delay,' that you not do first the priestly tithes before the first-fruits, etc"; and the rest of its details - are in Tractate Terumot (see Mishneh Torah, Laws of Heave Offerings 3).

And [it] is practiced by males and females in the Land of Israel and at the time that Israel is there - according to the opinion of Rambam (Mishneh Torah, Laws of Heave Offerings 1:26), who wrote that the commandment of the priestly tithe and [other] tithes is by Torah writ only at the time that the Land of Israel is settled [by the Jewish people]. And one who transgresses it and does these things first - this one over that one - his judgement is as for one who has violated the commandment of the King. But we do not administer lashes for it; as so is it elucidated there in Terumot (see Mishnah Terumot 3:6) - that there are no lashes for this negative commandment.

He prohibited having some laws of [produce] precede others, but they should rather be executed in their order. And the explanation by way of illustration is with wheat: When it is winnowed, it is tevel. First the priestly tithe is separated from it - and that is one part in fifty. And afterwards, one should separate the first tithe from the remainder. And afterwards, he should separate the second tithe from the remainder [of that]. And he should give the great priestly tithe to the priest, the first tithe to the Levite; and the owners should eat the second tithe in Jerusalem. And it is appropriate that he do it according to this order. And the prohibition about bringing forward what is appropriate to delay or to delay what is appropriate to bring forward is from His saying, "You shall not delay the first of your ripe fruits and of your liquor" (Exodus 22:29) - as if He said, "Do not delay that which is appropriate to bring forward from your ripe fruits and liquor." And in the Mishnah of Terumah (Terumot 3:6): "He who brings forward the priestly tithe before firstfruits, or the first tithe before the priestly tithe, or the second tithe before the first tithe: Even though he transgresses a negative commandment - as it is stated, 'You shall not delay the first of your ripe fruits and of your liquor' - what is done is done." And in the Mekhilta (Mekhilta d'Rabbi Yishmael 22:28:1) "'Your ripe fruits' - these are the firstfruits, which are taken from the ripe fruits. 'And of your liquor' - that is the priestly tithe. 'Do not delay' - you shall not bring forward the second tithe before the first-tithe, the first [tithe] before the priestly tithe, or the priestly tithe before the firstfruits, [etc. From here they said, 'If one brings forward the priestly tithe before the firstfruits or the first tithe before the priestly tithe] or the second tithe before the first [tithe] - even though he transgresses a negative commandment, what is done is done.'" And it has already been explained in the first chapter of Temurah (Temurah 4a) that one who brings [a category] forward is not lashed. (See Parashat Mishpatim; Mishneh Torah, Heave Offerings 3.)