Related for Chullin 52:51
בחתימתה
At what part [of the Habdalah service] is this [formula] said? - Rab Judah said: At the conclusion.<span class="x" onmousemove="('comment',' Whereas at the beginning of the Habdalah prayer of formula used is: 'who makest a distinction between holy and profane'. V. P.B. loc. cit.');"><sup>27</sup></span>
Tosefta Sukkah
Should the first day fall on the eve of Sabbath they sound a plain note, but do not sound a tremolo. How do they sound? With a single plain, and not a tremulous, note. “The flute-playing supersedes the Sabbath” - the words of Rabbi Yose ben Rabbi Yehudah. But the sages say, “It does not supersede even the festival itself.”
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