Reference for Kiddushin 49:18

וסבר רבי לענין טבילה כטמון דמי והאמר רבין אמר רב אדא אמר רבי יצחק מעשה בשפחה של בית רבי שטבלה ועלתה ונמצא עצם בין שיניה והצריכה רבי טבילה אחרת

Rabbi holds, [the verse reads thus:] And the clean person shall sprinkle upon the unclean on the third day, and on the seventh day and purify him.<span class="x" onmousemove="('comment',' By linking 'the unclean' with 'purify him', he deduces that whatever part can become unclean may be validly sprinkled; hence the tongue is included.');">²⁸</span> Whereas the Rabbis maintain, [the verse is read thus:] and on the seventh day he shall purify him, and he shall wash his clothes and bathe himself in water.<span class="x" onmousemove="('comment',' They connect 'shall purify' i.e., sprinkle, with 'bathe himself, i.e., tebillah. Hence sprinkling must be on the same part which needs tebillah, thus excluding the tongue.');">²⁹</span> And the Rabbis too: let it be compared with uncleanliness? - purification should be learned from purification.<span class="x" onmousemove="('comment',' . I.e., the two phrases bearing on cleanliness must be coupled.');">³⁰</span>

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