Reference for Bekhorot 114:31

חמשה לפני הגורן וחמשה לאחר הגורן הרי אלו מצטרפין

IF SO, WHY DID THEY SPEAK OF THREE PERIODS FOR THE TITHE OF CATTLE?<span class="x" onmousemove="('comment',' Since the periods fixed for tithing do not form an interval with respect to the lambs born before them.');">²²</span>

Jastrow

Jastrow