Reference for Chullin 271:22

אמר רב ביבי בר אביי

What then is the significance of 'thy roof'? - It excludes the roofs of Synagogues and Houses of Study.<span class="x" onmousemove="('comment',' For the verse implies the roof of a house used as a dwelling but not the roof of any other building.');">¹⁸</span>

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