Reference for Yevamot 27:13

והאי מאי קושיא ולא אמרינן מקומות שאני אנן הכי קאמרינן ר' אבהו היכי עביד הכא הכי והיכי עביד הכא הכי

he did not carry a candle!<span class="x" onmousemove="('comment',' Is not the practice of carrying a candle in one place and not carrying it in another as undesirable as the formation of opposing sects? ');">²¹</span> — What question is this! Has it not been said that the case is different [when the varied practices are respectively confined to] varied localities? — This is the question:<span class="x" onmousemove="('comment',' Lit., 'we say thus'. ');">²²</span>

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