When two groups combine for zimun, how much of the blessing must both groups hear from the leader?
Synopsis
At minimum, both groups must clearly hear the birkat hazimun from the leader. The Mechaber and Rema dispute exactly where birkat hazimun ends. Both agree that l'chatchila, both groups should ideally hear the entire Birkat HaMazon.
More in Zimmun — Joining and Splitting Groups
Can two groups eating in one or two houses combine for a zimun when some members of each group can see one another?
3 opinions
Does a single waiter (shamash) serving both groups suffice to combine them for a zimun, even without mutual visibility?
2 opinions
Is a prior intention (initially entering with intent to combine) required for two groups to combine for zimun?
4 opinions
Does a public domain (reshut harabim) or private path separating two houses prevent combination for zimun?
3 opinions
Does a public domain prevent combination for zimun at a wedding feast (beit hachupa)?
2 opinions
Can groups eating partly inside a house and partly outside combine for zimun, and if so how?
3 opinions
When two groups combine and want the leader to discharge them entirely from Birkat HaMazon, what must they do?
2 opinions
What is the rule b'dieved if someone did not hear the leader's zimun call but heard the responders answering 'Baruch she'achalnu'?
1 opinions
Related from other topics
When a visitor enters a home where multiple groups are eating and each group offers him a cup of wine, must he recite a new blessing (Borei Pri HaGafen) over each cup?
Leaving the Table During a Meal
When may a group of six or more separate into smaller groups for zimun?
Zimmun of Ten
May a large group that cannot hear the zimun leader split into smaller groups of three (rather than ten) to facilitate zimun?
Zimmun of Ten
Can three who came from three separate groups (each of which made zimun) combine to make a new zimun?
Zimmun of Ten
May one person from each of three groups of three separate and form a new zimun group, leaving only two in each original group?
Zimmun of Ten
If three people ate together but none of them knows the full Birkat HaMazon — only one knows the first blessing, one the second, and one the third — are they obligated in zimun, and may they each recite only the blessing they know?
Zimmun with Bread vs. Without
Discussion
Discussion coming soon.
The Daily Law
One question. Every opinion. Every morning.
A new halakhic question and the full spectrum of rabbinic thought, delivered daily.