Reference for Bekhorot 94:32

יוצא דופן והבא אחריו שניהן אינן בכור לא לנחלה ולא לכהן

OR REPTILES, OR CREEPING THINGS, OR IF SHE DISCHARGES ON THE FORTIETH DAY [OF CONCEPTION],<span class="x" onmousemove="('comment',' Because until the morrow of the fortieth day of conception the foetus is considered as mere water, an embryo taking more than forty days to form.');">²²</span>

Jastrow

Jastrow

Jastrow

Jastrow