Reference for Zevachim 70:5
מותיב (רבא) [רבה] ואלו שאין מפגלין ואין מתפגלין צמר שבראשי כבשים ושער שבזקן תיישים והעור והרוטב והקיפה והאלל והמוראה והעצמות והגידין והקרנים והטלפים והשליל והשיליא וחלב המוקדשין וביצי תורין
Surely that means, through the flesh being kept overnight; and you may infer from this [that] since being kept overnight renders it unfit, an [illegitimate] intention renders it unfit!<span class="x" onmousemove="('comment',' Now, that cannot mean an illegitimate intention to eat the flesh on the morrow (which is tantamount to an intention to keep it overnight) , for it has already been stated that this is of no account. Hence it must mean that an illegitimate intention to burn the emurim on the morrow renders the flesh piggul, which supports R. Eleazar.');"><sup>4</sup></span>