Reference for Pesachim 27:12

אלא לרבינא משמיה דרבא דאמר מקרא מלא דיבר הכתוב לא שנא חולין לא שנא תרומה לא שנא קדשים אינו עושה כיוצא בו מאי איכא למימר

But food cannot defile food, for it was taught: You might think that food should defile food, therefore it is stated, But if water be put upon the seed, and aught of their carcase fall thereon, it is unclean:<span class="x" onmousemove="('comment',' Lev. XI, 38.');">¹³</span> it is unclean, but it does not render tha which is similar thereto unclean?<span class="x" onmousemove="('comment',' Then what increase of uncleanness can there be in the Mishnah?');">¹⁴</span>

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