Reference for Pesachim 87:1

לענין חמץ בפסח נמי

in the matter of leaven too?<span class="x" onmousemove="('comment',' There too he learns that there is a negative injunction in respect of the mixture of leaven; hence he should likewise assume that it refers to half all olive of each.');">¹</span> - That indeed is so; yet this<span class="x" onmousemove="('comment',' Sc. the particular mention of the burning of leaven on the altar.');">²</span>

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