Commentary for Kiddushin 9:6
רבא אמר אמר קרא (דברים כד, א) וכתב לה בכתיבה מתגרשת ואינה מתגרשת בכסף ואימא בכתיבה מתגרשת ואינה מתקדשת בכתיבה הא כתיב (דברים כד, ב) ויצאה והיתה מקיש וכו'
Say rather, she can be divorced by 'writing', but not betrothed by writing? - But it is written, and when she is departed, she may go and be, etc. , assimilating etc.<span class="x" onmousemove="('comment',' Supra, proving that she can be married by writing.');"><sup>12</sup></span> And why do you choose thus?<span class="x" onmousemove="('comment',' To exclude money for divorce and include deed for marriage; perhaps one should reverse it?');"><sup>13</sup></span> - It is logical: when treating of divorce, one excludes [a particular method of] divorce; but when dealing with divorce, shall one exclude [a form of] marriage?
Daf Shevui to Kiddushin
Daf Shevui to Kiddushin
The resolution is the same comparison—just as she can be divorced through a document, so too she can be betrothed.