Reference for Eruvin 70:1
להודיעך כחו דרבי יוסי תנא תרומה ונטמאת להודיעך כחו דרבי מאיר
to inform you of the power of R'Jose.<span class="x" onmousemove="('comment',' Who ruled the 'erub to be effective even if it ceased to exist.');"><sup>1</sup></span> and 'TERUMAH THAT BECAME UNCLEAN' was taught to inform you of the power of R'Meir.<span class="x" onmousemove="('comment',' Who does not regard the terumah, about which there was doubt whether uncleanness was conveyed to it before or after twilight, as clean. The ruling shows that though the terumah was in existence and there is also the presumption in its favour that at twilight it was clean as it was before the uncleanness had been conveyed to it, R. Meir nevertheless does not regard it as levitically clean.');"><sup>2</sup></span>