Reference for Zevachim 115:14

ומאי סימנא רבי יוסי היא דתניא

and slaughtered therein: would that be a [proper altar]? Surely it was taught: An altar of earth thou shalt make unto Me:<span class="x" onmousemove="('comment',' Ex. XX, 21.');">¹⁷</span> [this teaches] that it must be joined to the earth, t it must not be built over cavities or on rocks? - It means that he shortened it<span class="x" onmousemove="('comment',' It was decided to shorten the altar, and the northern half of it was thus left clear. Although it is still the side, the offerings slaughtered there are unfit, which proves that he holds that the altar is in the south, as there is no other reason for its unfitness.');">¹⁸</span> R'Zera said: Is it possible that this statement of R'Johanan<span class="x" onmousemove="('comment',' That R. Jose holds that the whole altar stood in the north.');">¹⁹</span> is correct, and yet we have not learnt it in th Mishnah?<span class="x" onmousemove="('comment',' There must be some hint of it in the MISHNAH:');">²⁰</span> So he went out, searched, and found it. For we learnt: They selected from there<span class="x" onmousemove="('comment',' The wood-shed, in which the wood for the altar was kept.');">²¹</span> sound fig-tree wood<span class="x" onmousemove="('comment',' Not worm-eaten.');">²²</span> to arrange the second pile for incense<span class="x" onmousemove="('comment',' At the side of the large wood-pile, on which the offerings were burnt, a smaller pile was made, whence three kabs of burning coals were taken every morning and evening for the inner altar, on which the incense was burnt.');">²³</span> by the south-west horn at a distance of four cubits from it northward; [sufficient wood was taken to make] about five se'ahs of coals,<span class="x" onmousemove="('comment',' So that it should be easy to take the necessary quantity of live coals from it for the inner altar.');">²⁴</span> and on the Sabbath, about eight se'ahs, because they placed there the two censers of frankincense for the shew-bread.<span class="x" onmousemove="('comment',' This frankincense was burnt on the Sabbath, and on the outer altar, on this special pile. Therefore more coals were required (as the other incense still had to be burnt on the inner altar) . V. Tam. II, 5.');">²⁵</span> And what is the token?<span class="x" onmousemove="('comment',' By which sign did the Sages rule that this second pile was in that particular spot?');">²⁶</span> - This agrees with R'Jose. For it was taught:

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