Reference for Yevamot 239:12
אע"פ שיש סימנין וכו': למימרא דסימנין לאו דאורייתא
Abba b. Martha, otherwise<span class="x" onmousemove="('comment',' Lit., 'which he', 'who was'. ');"><sup>30</sup></span> Abba b. Manyumi, was being pressed for the payment of some money by the people of the Exilarch's house. Taking some wax he smeared it on a piece of rag and stuck it upon his forehead. He passed before them and they did not recognize him.<span class="x" onmousemove="('comment',' Lit., 'they did not discover it'. [H] (cf. [H]) 'to examine', 'to discover'. ');"><sup>31</sup></span> THOUGH THERE WERE ALSO MARKS etc. Does this imply that identification marks are not valid Pentateuchally? A contradiction, surely, may be pointed out: If he<span class="x" onmousemove="('comment',' A man who was carrying a letter of divorce from a husband to his wife. ');"><sup>32</sup></span>