Reference for Yoma 53:6

ואימא למעוטי סידור שני גזירי עצים מסתברא דיבחא דכותיה ממעט

Now, [Abaye went on explaining to his son] since the work obligatory on the priests starts only with the receiving of the blood, what is the purpose of: And the sons of Aaron. shall put the fire?<span class="x" onmousemove="('comment',' Since the putting on of the fire followed the presenting of the blood, the latter signifying the commencement of the priestly function, why was it necessary to mention that the 'Sons of Aaron' perform it?');">⁸</span>

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