Arukh HaShulchan, Orach Chaim 261:15-262:5

Sugya Map

• Issue: Defining the minimum requirements and permissible timing for Seudah Shlishit, particularly regarding eating a kezayit of bread and the status of eating after shkiah.
• Nafka Mina(s): Does Seudah Shlishit require bread? Can one fulfill the mitzva after shkiah? What's the bracha achrona implication?
• Primary Sources: Gemara Shabbat 118a-b; Rambam, Hil. Shabbat 30:9; Shulchan Aruch O.C. 291:1-2; Arukh HaShulchan, O.C. 261:15-262:5.

Text Snapshot

The Arukh HaShulchan grapples with the b'dieved fulfillment of Seudah Shlishit: "וכן מי שלא אכל סעודה שלישית ביום והגיע הלילה ומוצאי שבת – יכול לאכול מיד סעודה שלישית, ואינו אומר 'רצה' בברכת המזון. דהרי מצותה ביום, אלא דהשתא קא משלים למצותה." Arukh HaShulchan, Orach Chaim 262:2 Dikduk/Leshon Nuance: The phrase "קא משלים למצותה" (completes its mitzva) is key. It implies a qualitative difference from l'chatchila fulfillment, framing the act as a tashlumin (completion) rather than a pristine performance of the daytime mitzva. This explains the omission of Ratzah.

Readings

Arukh HaShulchan (O.C. 262:2)

His chiddush is a pragmatic psak: one can eat Seudah Shlishit after shkiah (even motza'ei Shabbat) to complete the mitzva, albeit without Ratzah. This demonstrates a leniency to ensure the mitzva is ultimately performed, even if imperfectly.

Magen Avraham (O.C. 291:1 s.v. "שלא יאכל")

The Magen Avraham, often a foundational source for the Arukh HaShulchan, permits eating a kezayit after shkiah if one missed Seudah Shlishit during the day. He emphasizes that the chiyuv is to eat three meals, and this tashlumin ensures that minimum is met.

Friction

Kushya

How can one fulfill a "daytime" mitzva (מצותה ביום) after shkiah, when Shabbat itself has concluded? This seems to contradict the very nature of mitzvas zman grama.

Terutz

The Arukh HaShulchan's "קא משלים למצותה" (Arukh HaShulchan, O.C. 262:2) offers a resolution. The mitzva is primarily b'yom, but if missed, Chazal instituted a b'dieved mechanism to complete the spiritual obligation. It's not a full l'chatchila fulfillment (hence no Ratzah), but rather a tashlumin in the spirit of "כל המקיים שלש סעודות בשבת..." (Shabbat 118a).

Intertext

• Gemara Shabbat 118a: "תנו רבנן: שלש סעודות חייב אדם לאכול בשבת..." This is the root source for the chiyuv of three meals, which the Aruch HaShulchan is ensuring is fulfilled, even b'dieved.
• Shulchan Aruch, Orach Chaim 291:1-2: The Arukh HaShulchan's discussion builds directly on the S.A.'s codification of Seudah Shlishit, adding practical b'dieved scenarios.

Psak/Practice

The halacha follows the Arukh HaShulchan's lenient approach: if one inadvertently missed Seudah Shlishit during the day, one should eat at least a kezayit of bread after shkiah (even motza'ei Shabbat) without reciting Ratzah in Birkat HaMazon. This ensures the mitzva is completed, albeit b'dieved.

Takeaway

Chazal provide mechanisms for tashlumin even for mitzvos d'rabanan, prioritizing the spiritual completion of the mitzva over strict adherence to ideal timing.