Reference for Pesachim 199:5

לא הלכה מכלל דפליגי בהפסקה

- No: 'The halachah [etc.]' proves that they disagree in respect to interruption. For it was taught: One must interrupt [the meal] for the Sabbath:<span class="x" onmousemove="('comment',' The Heb. is in the plural: Sabbaths. I.e., if one started eating before the Sabbath, he must interrupt the meal when the Sabbath commences, remove the table and recite grace (the table was generally removed before grace, v. Ber. 42a) , then recite kiddush, the prayer of sanctification, and proceed as with a new meal. According to a version infra 100b, the table was removed before kiddush, which then preceded grace (Tosaf.) .');">⁵</span>

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