Reference for Zevachim 212:6

אלא אמר (ר' אבין) ק"ו ומה במקום שלא ענש הזהיר מקום שענש אינו דין שהזהיר

You might think that one is punished for it by kareth; therefore it states, This shall be a statute for ever unto them throughout their generations:<span class="x" onmousemove="('comment',' From Lev. XVII, 7.');">¹</span> 'this' is their [statute].

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