Reference for Niddah 141:6

(תהלים קכז, ג) הנה נחלת ה' בנים שכר פרי הבטן

and Rab explained, 'This teaches that she had experienced a menstrual discharge', so that here also,<span class="x" onmousemove="('comment',' The case of dying women spoken of in our Mishnah. ');">⁵</span>

Jastrow