Eruvin 36a-37a
b'Questionable eruvin: If, how, and when they are effective \\u2022 Retroactive eruvin \\u2022 Justification for setting up eruvei techumin: why run away from the chazzan?'
b'Questionable eruvin: If, how, and when they are effective \\u2022 Retroactive eruvin \\u2022 Justification for setting up eruvei techumin: why run away from the chazzan?'