Reference for Pesachim 206:3

אמר להו רב אחא בר רבא אנן כמאן נעביד אמימר אמר נמלך אנא מר זוטרא אמר אנא דעבדי כתלמידי דרב

What is the reason? Because you let it pass out of your minds.'<span class="x" onmousemove="('comment',' This proves that Grace constitutes an interruption, and so the blessing over the wine must be repeated after Grace; and Raba acted in accordance with this ruling.');">⁵</span> Amemar and Mar Zutra and R'Ashi were sitting at a meal and R'Aha the son of Raba waited on them.

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