Reference for Bava Metzia 216:9
שכן ותלמיד חכם תלמיד חכם קודם קרוב ותלמיד חכם תלמיד חכם קודם איבעיא להו שכן וקרוב מאי ת"ש (משלי כז, י) טוב שכן קרוב מאח רחוק
[A sale] to a woman, orphans, or a partner is not subject to the law of pre-emption.<span class="x" onmousemove="('comment',' It was not held seemly that a woman should go about in search of land to buy; therefore the first purchase she makes is valid, even though it infringes upon the rights of pre-emption. The same privilege is accorded to orphans, on account of their generally defenceless state. With respect to partners, there are different interpretations. Rashi: If A and B are partners in a field, and C is their neighbour, A can sell his portion to B, and C cannot plead, 'Since I am a neighbour, I am entitled to buy half that portion, as in the case of two neighbours.' Tosaf. and R. Hai (quoted in Asheri a.l.): If A and B are partners in general, in land, or in business, A can sell a field to B (in which they are not partners) notwithstanding that C is a neighbour. In actual law, both interpretations are accepted; v. H.M. 175, 12 and 49. ');"><sup>9</sup></span>