Reference for Eruvin 69:17

אפילו תימא כרבי לא צריכא דבעי מרא וחצינא

R'JOSE AND R'SIMEON RULED: AN 'ERUB [WHOSE VALIDITY IS] IN DOUBT IS EFFECTIVE. R'JOSE STATED: ABTOLEMOS TESTIFIED ON THE AUTHORITY OF FIVE ELDERS THAT AN ERUB [WHOSE VALIDITY IS] IN DOUBT IS EFFECTIVE. <big><b>GEMARA: </b></big>[IF AN 'ERUB] ROLLED AWAY BEYOND THE [SABBATH] LIMIT. Raba stated: This was taught only where it rolled away beyond [a distance] of four cubits, but [if it rested] within the four cubits [ is effective, since a person] who deposits his 'erub [in any spot] acquires<span class="x" onmousemove="('comment',' In addition to the right of walking two thousand cubits in all directions.');">⁵⁹</span>

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