No clapping on Shabbat?

Today's Daf Yomi forbids clapping on Shabbat and Yom Tov. Shabbat 148b quotes a mishnah from Beitsah 36b:

ואמר ליה רבא בר רב חנן לאביי: תנן, לא מספקין ולא מטפחין ולא מרקדין ביום טוב. וקא חזינן דעבדין, ולא אמרינן להו ולא מידי! [...] אלא: הנח לישראל, מוטב שיהו שוגגין ואל יהו מזידין.

It's a straightforward mishnah brought down straightforwardly by the Shulhan Arukh, OH 339:4. No clapping.

But of course, many of us do clap. Many authorities came to acknowledge this over history, starting with this Gemara, and continuing through the rishonim and aharonim.

Rabbi Ari Enkin already goes through the sources on this topic, so I don't have to go through them all here. But some are worth seeing inside.

What is honey?

The Mishnah on Shabbat 143b presents a dispute about crushing honeycomb on Shabbat:

חלות דבש שריסקן מערב שבת ויצאו מעצמן - אסורין, ורבי אליעזר מתיר.

The Gemara on 145b (and in a similar discussion on 19b) notes that Rabbi Eliezer and the Sages have the same dispute as for olives and grapes, and explains why we might have thought that honeycomb should be more lenient.

חלות דבש. כי אתא רב הושעיא מנהרדעא, אתא ואייתי מתניתא בידיה: זיתים וענבים שריסקן מערב שבת, ויצאו מעצמן - אסורין, ורבי אלעזר ורבי שמעון מתירין. אמר רב יוסף: גברא יתירא אתא לאשמעינן? אמר ליה אביי: טובא קא משמע לן, דאי ממתניתין - הוה אמינא: התם הוא - דמעיקרא אוכלא ולבסוף אוכלא, אבל הכא דמעיקרא אוכלא ולבסוף משקה - אימא לא, קא משמע לן.

Honey from a honeycomb “starts as food and ends as food,” whereas squeezing olives or grapes gets you a liquid.

Lemonade on Shabbat

Shabbat 143b through 145a addresses sehitah, the prohibition against squeezing on Shabbat. This came up on this blog once before.

The posekim debate how this prohibition relates to making lemonade. At first glance, you might think that making lemonade is a straightforward example of squeezing. But God forbid that lemonade should be asur on Shabbat!

First, here are the basics that most rishonim learn from the give-and-take on these pages of Gemara. (It happens to be a relatively challenging give-and-take to follow, which is kind of unfair to Daf Yomi learners on Purim weekend.) There are three type of fruit: grapes and olives, which may not be squeezed mide-orayta; "tutim ve-rimonim," fruits which are commonly squeezed for juice, and may not be squeezed mide-rabbanan; and other fruits, which may be squeezed lekha-tehillah. That's most rishonim, including the Rif, Rambam, Semag and Rosh. and most Rashi, Tosafot, and the Semak are mahmir with that last one, and only allow squeezing a fruit if you do so to sweeten the fruit.

A squeeze on the Beit Yosef

This week, our topic in afternoon seder has been sehitah, squeezing liquid out of a solid on Shabbat. We came across an Eglei Tal that cites a Tosafot from today's Daf Yomi. It seems like Daf Yomi material comes up elsewhere in my day surprisingly often.

The Eglei Tal is “shocked” at the Beit Yosef.