Halakha Imamat 23:8: Mishneh Torah, Shofar, Sukkah and Lulav, Sefer HaChinukh & Mishneh Torah, Negative Mitzvot

We do not profane the holiday — even regarding something that is on account of a Shabbat (holiday) decree — for the shofar of Rosh Hashanah. How is this? If a shofar was on top of a tree or over a river and one does not have [another] shofar besides it, he may not climb the tree and he may not swim over the surface of the water in order to bring it. And it is not necessary to say that we may not cut down [the tree] or do [other] forbidden work upon it. For blowing the shofar is a positive commandment, whereas [the sanctity of] the holiday is a positive commandment and a negative commandment — and a positive commandment does not override a negative commandment and a positive commandment. It is permissible to put water, wine or vinegar into [the shofar] on a holiday in order to make [its sound] clear. But one may not ever put urine into it, due to the respect [that must be shown to the shofar] — so that the commandments not become contemptible to him.

The commandment of the additional sacrifices all of the seven days of Pesach: To sacrifice the additional sacrifice on all of the seven days of Pesach, as it is stated (Leviticus 23:8), “And you shall offer a fire-offering to the Lord seven days.” And it is like the sacrifice of Rosh Chodesh (the new moon): two bulls; one ram; seven sheep — all of them burnt-offerings, and as it is written explicitly about all of them in the Order of Pinchas (Numbers 28:19), “a fire-offering, a burnt-offering,” and I have already explained the statute of a burnt-offering above (Sefer HaChinukh 115) — [and one goat as a sin-offering, and it is eaten].

The commandment of resting on the seventh [day] of Pesach: To rest on the seventh day of Pesach, as it is stated (Leviticus 22:8), “and on the seventh day, a holy occasion.” And I have already written above close by to this commandment (Sefer HaChinukh 297) that in every place in which it is stated in the Torah, “a holy occasion,” its content is to say, make it holy, to not do work on it, and [that] it is a positive commandment. And a hint from the roots of the commandment from the angle of its simple understanding is also written there. And as is our custom, we will write a few of its laws with God’s help in the negative commandment of the prohibition of work in this Order (Sefer HaChinukh 298). And the entire content of resting on the seventh [day] is like the rest of the first day. And they are both considered one festival with regards to that which we do not say [the blessing over] time (shehecheyanu) on the seventh; and so with every matter — which is not the case on Shemini Atseret, which is a holiday on its own (Yoma 2b), and as we will write in its place (Sefer HaChinukh 323), with God’s help.