Reference for Zevachim 12:11

וליקו ולימא ליה לקרא דכי כתיבא בזה אחר זה כתיבא

yet it makes atonement! - [No:] If they were separated at the same time, that indeed would be so;<span class="x" onmousemove="('comment',' The second would not make atonement for anything not atoned for by the first, and so it would have no purpose.');">¹⁵</span> but the circumstances are that they were separated one after the other.<span class="x" onmousemove="('comment',' And the second makes atonement for the defilement which occurred in the interval on the eve of the Festival between the separations.');">¹⁶</span>

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