Reference for Yevamot 240:8
ומי מצית לאוקומי כר"ש בן אלעזר והא קתני סיפא מעשה בעסיא באחד ששילשלוהו לים ולא עלתה בידם אלא רגלו ואמרו חכמים מן הארכובה ולמעלה תנשא מן הארכובה ולמטה לא תנשא
the Rabbis. For it was taught: Evidence may be legally tendered on [the death of a person] whose arteries were cut,<span class="x" onmousemove="('comment',' The evidence being accepted as valid to enable the man's wife to remarry. ');"><sup>19</sup></span> but no such evidence may be tendered concerning one crucified. R. Simeon b. Eleazar ruled: No such evidence may be legally tendered even concerning one whose arteries were cut, because [the wounds] might be cauterized and [the man] may survive.<span class="x" onmousemove="('comment',' Lit., 'he is able to burn and to live'. Our Mishnah would thus represent the view of R. Simeon b. Eleazar. ');"><sup>20</sup></span> Can this,<span class="x" onmousemove="('comment',' V. supra n. 8. ');"><sup>21</sup></span>