Explanation: "Ela" (rather, which shows a retraction) refers to R. Yitzchak's teaching above, that the tradition was for 30 days before Rosh Hashanah, i.e. for mature trees;

Do not say that the tradition comes to teach this. Rather, Rav Nachman holds that the Isur of 30 days was based on Chachamim's judgment, and they were further stringent [to forbid until Pesach and Shavu'os] mid'Rabanan.

Alternative opinion: Some delete "Ela" from the text of Rav Nachman's words. It is not proper to elaborate about this opinion.

Question: We learn (Yuma 81b) from verses that one must make a Tosefes (addition) to Shabbos, both when it enters and leaves, to add from Chol to Kodesh!

Answer: That small amount is not important, since it is Kalshehu (any amount suffices);

R. Gamliel would agree that one must add that Shi'ur [to Shevi'is, when it enters and leaves].

Explanation: Surely, mid'Oraisa it is Batel, but not like we said above;

Rather, he (R. Gamliel) holds like R. Yishmael. R. Gamliel was meticulous about why the traditions about Tosefes Shevi'is and Nisuch ha'Mayim were taught together;

Everywhere, these three Halachos (including also Aravah) are taught together. They were given [to Moshe] this way. Surely, Hash-m did so to teach [that all of them apply only when the Mikdash stands].

Explanation: We discuss a case in which we know that the [rain]water will not cease, and it is forbidden only due to the reason given (a decree lest he take from a low well);

However, if they cease, there is an Isur like below.

Regarding anything that ceases, we forbid lest he bring from a far place. Since he began to water it, [he must continue,] lest his field be ruined.

Therefore, we establish here to discuss when it does not cease.

Explanation: Taking from a deep place is called Diluy. Even though there is excessive exertion, Chachamim permitted in order to eat;

However, to improve is forbidden, even if there is no exertion.

Implied question: The Torah forbids taking Olelos!

Answer: That is only at the time of harvesting, like it says "Ki Sivtzor Karmecha Lo Se'olel." Then, the Isur of Olelos applies.

Explanation #1: It truly looks like plowing. People who see it think that he intended for this.

Explanation #2: It is considered like truly working the land. Even though he does not intend for this, it is Melachah.

Implied question: R. Shimon permits Davar she'Eino Miskaven!

Answer: We say that R. Shimon agrees about a Pesik Reishei (an inevitable consequence, e.g. one cannot cut off a chicken's head) and it will not die;

Rabanan (who permit) hold that since he does it through a Shinuy, it is not a Melachah, and it is permitted, for it is not considered plowing.

Explanation: There is no concern for this (lest it looks like he plows), for one who sees the ditch sees the manure in the ditch.