Reference for Niddah 49:42

מדרבנן וקרא אסמכתא בעלמא הוא

but the fact is that R. Joshua was rather doubtful on the matter and, therefore, he followed a restrictive course in both cases.<span class="x" onmousemove="('comment',' In that of a firstling of cattle and in that of a woman's uncleanness (as will be explained presently). ');">³⁷</span>

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow