Reference for Niddah 33:1

ומשתין מים ערום לפני מטתו והמשמש מטתו בפני כל חי

the man who when naked makes water in front of his bed, and the man who has intercourse in the presence of any living creature. 'Even', said Rab Judah to Samuel, 'in the presence of mice?' 'Shinena',<span class="x" onmousemove="('comment',' Cf. n. supra 13a. ');">¹</span>

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