DEUT1329 R. Pappa said to Rava: If he found in her neither "nakedness" nor a "thing" [of any kind], and he divorced her, what is the halachah? [i.e., is the divorce valid?] He answered: Since Scripture made manifest in respect to a ravisher (22:29): "He shall not be able to send her away all of his days" -- all of his days he is subject to the positive commandant of taking her back -- it is there that this was made manifest; but here, what was done was done [and the divorce stands] (GIttin 90a)
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