Reference for Shabbat 32:9

ולר' יוסי דאמר מחלוקת עדיין במקומה עומדת בצרי להו א"ר נחמן בר יצחק אף בנות כותים נדות מעריסתן בו ביום גזרו:

while the other Master holds that his intention was not nullified. Now, according to R. Jose, who maintained, The controversy still stands in its place, they are less [than eighteen]?<span class="x" onmousemove="('comment',' Since there is a controversy, the halachah agrees with Beth Hillel, that the mikweh is fit. ');">²⁵</span> — Said R. Nahman b. Isaac: On that same day they also enacted that the daughters of Cutheans<span class="x" onmousemove="('comment',' The Cutheans were the descendants of the heathens who settled in Samaria after the destruction of the Northern Kingdom. They accepted a form of Judaism, and the Rabbis' attitude towards them varied. At times they were regarded as Jews, but they were subsequently declared non-Jews. The present enactment treats them as Jews, who, however, are looked upon with disfavour. ');">²⁶</span>

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