Reference for Menachot 44:6

אי אשמעינן עולין מין בשאינו מינו כדקאמרת השתא דאשמעינן מין במינו משום דמין במינו הוא

been merely a mixture of like kinds and not of things which are offered up, it would be as you say; but since it is here a mixture of things which are offered up,it is clear that the reason is that it is a mixture of things which are offered up, perhaps then [we can conclude from this that] only in a mixture of like kinds of things which are offered up [one element cannot neutralize the other]! - This is a difficulty.

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