Reference for Eruvin 136:2

אנא בהא כשמואל סבירא לי דאמר אין מבטלין וחוזרין ומבטלין

let them renounce their right<span class="x" onmousemove="('comment',' In Raba's courtyard.');">⁵</span> in the Master's favour,<span class="x" onmousemove="('comment',' Who, in consequence, would again be allowed the free use of his courtyard.');">⁶</span> for did not Rab rule: Renunciaton<span class="x" onmousemove="('comment',' By one person in favour of another.');">⁷</span> may be followed<span class="x" onmousemove="('comment',' On the same Sabbath.');">⁸</span>

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