Reference for Niddah 42:33

אמר רבי יוחנן משום רבי שמעון בן יוחי

implying: But not in a tube; for if the expression 'In her flesh' had been required for the deduction that it<span class="x" onmousemove="('comment',' Menstrual blood. ');">²⁵</span>

Jastrow

Jastrow