Reference for Gittin 34:3

בשלמא לריש לקיש משום הכי קא מכשיר ר"ש אלא לרבי יוחנן מאי טעמא דר"ש דמכשיר

On the theory of Resh Lakish we can understand why R. Simeon should declare valid [a Get signed on the following night].<span class="x" onmousemove="('comment',' Because according to R. Simeon he loses his title to the increment when he decides to divorce her; v. infra 18b. ');">³</span>

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