Reference for Bava Batra 114:3

אלא אמר רב נחמן אמר רבה בר אבוה הכא ברחבה של אחורי בתים עסקינן דבהעמדה כדי לא קפדי ואמחיצה קפדי

But where the issue is one of [breaking] a religious precept,<span class="x" onmousemove="('comment',' In the case of a vow. ');">⁵</span> we take the more stringent view.<span class="x" onmousemove="('comment',' We assume that the others do mind his standing in the courtyard. Hence if they allow him to do so, and he does, he would be deriving a benefit from them and so breaking his vow. ');">⁶</span>

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