Midrash for Sanhedrin 41:2
וצדוק גופיה מנלן דתניא רבי אומר (ויקרא כד, ט) והיתה לאהרן ולבניו מחצה לאהרן ומחצה לבניו:
this means, half belonged toAaron and half to his sons.<br> <b><i>MISHNAH</i></b>. <font>NEITHER SHALL HE MULTIPLY WIVES TOHIMSELF.</font><span class="x" onmousemove="('comment',' Deut. XVII, 17. ');"><sup>3</sup></span> — ONLY <font>EIGHTEEN.</font>R. JUDAH SAID: <font>HE MAY HAVE MORE</font>, PROVIDED THEY DO NOT TURN AWAY HISHEART. <font>R. SIMEON SAID: HE MUST NOT MARRY EVEN ONE WHO MAY TURN AWAY HIS HEART.</font><font>WHY THEN IS IT WRITTEN, NEITHER SHALL HE MULTIPLY WIVES TOHIMSELF?</font><span class="x" onmousemove="('comment',' Ibid. From which it might be inferred that he may marry a lesser number even if they should corrupt him. ');"><sup>4</sup></span>