Reference for Zevachim 103:13

יכול יעכבנו תלמוד לומר ואת כל (הדם) [הפר] ישפך

either as a statutory obligation or as a regulation needs the base, that whose blood enters the innermost sanctuary as a statutory obligation, is it not logical that it needs the base? You might think that it is indispensable for it:<span class="x" onmousemove="('comment',' Sc. the pouring out of the blood of the Day of Atonement bullock at the base.');">¹⁶</span>

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