(R. Chanina Tirsa'ah): If a Terumah onion was planted, and the added growth is more than the bulb, it is permitted.

Inference: Added permitted growth nullifies the forbidden bulb!

Question (Mishnah): If Terumah is planted, the growth is Terumah.

Answer: R. Chanina referred to a case of planting an onion that grew from a planted Terumah onion.

Question: This was taught in a Mishnah. R. Chanina would not need to teach it!

(Mishnah): Gidulim of Gidulim of Terumah is not Terumah.

Answer: R. Chanina teaches even about something in which what is planted remains. (It does not disintegrate like seeds.)

Question (Mishnah): If Tevel is planted, if the seed disintegrates, the growth is permitted;

If the seed remains, even the growth of the growth is forbidden (and all the more so, regarding Terumah)!

Answer: R. Chanina teaches that if the additional growth exceeds the amount planted, it is permitted.

(Mishnah): If one said 'I will not taste wine today', it is forbidden only until nightfall. If he said 'this week', it is forbidden the entire week, including the coming Shabbos;

If he said 'this month', it is forbidden the entire month, and Rosh Chodesh is considered part of the next month;

If he said 'this year', it is forbidden the entire year, and Rosh Hashanah is considered part of the next year;

If he said 'this Shemitah cycle', it is forbidden the remainder of the cycle, including the coming Shemitah.

If he said 'one day', 'one week', 'one month', 'one year', or 'one Shemitah', he is forbidden for that amount of time, from day to day.

If he said 'until Pesach', he is forbidden until Pesach comes. If he said 'until it will be Pesach', he is forbidden until the end of Pesach.

R. Meir says, if he said 'until Lifnei Pesach', he is forbidden until it comes;

R. Yosi forbids until the end of Pesach.

(Gemara - Mishnah): If he said 'wine is forbidden to me today'...

(R. Yirmiyah): After dark, he must seek a Chacham to permit his vow.

Question: What is the reason?

Answer #1 (Rav Yosef): This is a decree due to the case when he says 'one day' (lest people think that also then it is permitted at night). .

Question (Abaye): If so, we should also decree when he says 'one day' due to when he says 'today'! (He should be forbidden until dark tomorrow, lest he come to think that a vow of 'today' ends in the middle of the day. Perhaps the Havah Amina is that he will think that until midday suffices, for the majority of the day is like the entire day. - PF)

Answer (Rav Yosef): There is need for a decree only when he says 'today'.

If when he says 'today' he is permitted at nightfall, he may come to think that the same applies when he says 'one day'.

When he says 'one day', he is forbidden for 24 hours. This will not lead him to drink on the same day when he says 'today'.

Answer #2 (to Question (h) - Ravina): R. Yirmiyah holds like R. Nasan.

(Beraisa - R. Nasan): Vowing is like building a private Mizbe'ach (when this is forbidden). Completing the vow (i.e. not permitting it) is like offering a Korban on this Mizbe'ach. (Therefore, we fine him and require him to request permission.)

(Mishnah): If he said 'this week', he is forbidden the entire week.

Question: This is obvious!

Answer: One might have thought that he meant the weekdays. The Mishnah teaches that this is not so.

(Mishnah): If he said 'this month', he is forbidden the entire month, and Rosh Chodesh counts as part of the next month.

Question: This is obvious!

Answer: It needs to teach the case where the (coming) month is a short (29 day) month;

One might have thought that (the first day of) Rosh Chodesh counts like the 30th day of this month, and he is forbidden.

The Mishnah teaches that this is not so. People call it the beginning of the coming month.

(Mishnah): If he said 'this year', he is forbidden the entire year...

Question: If he said 'wine is forbidden to me for a day', what is the law?

Is this considered like 'today', or like 'one day'?

Answer #1 (Mishnah): If he said 'wine is forbidden to me today', it is forbidden only until nightfall.

Inference: Had he said 'a day', it would be forbidden for 24 hours.

Objection (Seifa): If he said 'one day', he is forbidden for 24 hours.

Inference: Had he said 'a day', he would be permitted at nightfall!

One of these inferences must be invalid. We cannot settle our question from the Mishnah.