Reference for Bava Kamma 190:3

תא שמע לצבוע לו אדום וצבעו שחור שחור וצבעו אדום ר' מאיר אומר נותן לו דמי צמרו דמי צמרו אין דמי צמרו ושבחו לא

[R. Meir] would impose the fine? — It may however be said that this is not so, [as we are dealing here] with a purchaser who is a scholar and knows very well<span class="x" onmousemove="('comment',' Also that the field has been misappropriated by the vendor (cf. Shittah Mekubezeth a.l.) and as such is guilty of wilful misappropriation. ');">³</span>

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