Reference for Pesachim 28:11

ואלא מדברי ר"ע מי דמי התם פסול וטמא הכא טהור וטמא

Shall we say, from the words of R'Hanina, the Segan of the Priests, - are they alike? There it is unclean and unclean, whereas here it is clean and unclean.

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