Reference for Zevachim 12:5

ת"ש ר' שמעון אומר כבשי עצרת למה הן באין

Then here too [it may mean that] 'it did make atonement etc'! - [No:] there too It means that 'he made atonement' - in respect of putting it on the thumbs,<span class="x" onmousemove="('comment',' V.Lev. XIV, 14.');">⁴</span> but 'he did not make atonement' - in respect of the putting it on the head.<span class="x" onmousemove="('comment',' Therefore more oil must be brought for that purpose. But whereas R. Johanan b. Nuri holds that it is sufficient now for the oil to be put on his head, R. Akiba rules that it must also be put again on his thumbs.');">⁵</span>

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