Related к Сукка́ 3:18

All of the day of the waving (i.e., the first day of the Omer, see Sukk. 3:12), it is forbidden to eat new grain. All of the seventh day [of Sukkot] one is obligated in sukkah, and all of the seventh day [of Sukkot] is valid for [waving] the lulav. All of the eighth day [after birth] is valid for circumcision. All of the night is valid for the reaping of the omer and for the burning of limbs and fat [leftover from the day's sacrifices]. The general principle is that anything commanded during the day is valid all day and anything commanded at night is valid all night. One is not liable for notar [leaving part of the shelamim sacrifice over] and the intention [at the time of the sacrifice to eat the shelamim sacrifice later] does not invalidate as pigul until dawn.

A palm-branch which is dried up, or whose top is broken, is not valid. A willow of a naturally watered field, or a mountain willow, is valid. If this is so, why is it said, "Willows of the brook?" [Leviticus 23] To exclude the tsaphtsaph.

If one does not have a citron, he must not take in his hand a quince, or any other fruit. Withered fruits are valid, but dried ones are not valid. Rabbi Yehudah, however, says that even dried-up ones are valid. And again he says: There is a story of the men of Carbin that they used to transmit their lulavs in the time of persecution. They said to him, The time of persecution is no proof.

On the first day of the festival no man fulfills his duty with his neighbor's lulav, except if he has given it to him as a real gift. There is a story of Rabban Gamaliel and the elders who were going on board a ship and had no lulav with them. Rabban Gamaliel bought a lulav for a gold denarius, and when he had fulfilled his duty with it, he gave it as a real gift to his fellows, and when they had in turn passed it on and fulfilled their duty they returned it to him. Rabbi Yose said, "On the first day of the festival, after one has fulfilled his duty with the lulav, he is forbidden to remove it."

The [beat of the willow] is a tradition from Moses at Sinai, and Abba Sha'ul deduced it from Scripture, as it is says, “Willows of the brook”, the plural denoting two, one for the lulav, and one for the altar. Rabbi Elieser ben Yacov said, Thus were they saying, "To Him and to thee, O altar, to Him and to thee, O altar!" Eighteen days and one night (in the year) the entire Hallel is repeated. These are: the eight days of sukkot, the eight days of Hanukkah, the first day of Passover, the night of the first day of Passover, and the first day of Shavuot.