Reference for Niddah 41:20

ור' יוחנן אמר

AND IF IT WAS A FEMALE SHE MUST CONTINUE [IN UNCLEANNESS AND SUBSEQUENT CLEANNESS FOR THE PERIODS PRESCRIBED] FOR A FEMALE,<span class="x" onmousemove="('comment',' Cf. ibid. 5. ');">¹⁶</span>

Jastrow