Reference for Yoma 120:5
ואמרינן מאי בינייהו רבי יוחנן ור' יהושע בן לוי חד אמר משמעות דורשין איכא בינייהו וחד אמר שירים מעכבי איכא בינייהו
R'Judah said to him: Why should we not interpret thus: If he has completed it, he has obtained atonement, if not, not, to say, that if one of the sprinklings is missing, he has done nothing? And we inquired: What is the difference between them and R'Johanan and R'Joshua B'Levi, each gave an answer: One said: They differ only as to the interpretation of the text, while the other said: The remaining blood<span class="x" onmousemove="('comment',' R. Akiba holds: the mission of the rite connected with it does not impair the atonement, as the main sprinklings had been made and the atonement is complete, even if the remaining blood has not been poured away; whereas R. Judah holds: If all is completed, then he has obtained atonement, if not (and failure to pour away the remaining blood would be included in this indispensable programme) not.');"><sup>10</sup></span> is what they differ in.