Chazakah De-Mamon vs. Chazakah De-Issur in Safek Kedushin

The shiur delves into a fundamental dispute among Rishonim regarding the nature of chezkas pnuya—the presumption that a woman remains unmarried. The Rif holds that when there is a safek (doubt) regarding kiddushin (betrothal), chazakah works to keep the woman in her status of penuyah (unmarried). The Gemara (גמרא) on daf hey beis explicitly uses the language of "safek," and the Rif rules that this safek means there is a concern d'rabbanan (rabbinic concern), requiring a get (divorce document) out of stringency. The Ran (Rabbeinu Nissim) initially suggests that the Rif's position is that the safek might not be a true safek mi-d'Oraisa at all, but rather a case where the woman is definitively not mekudeshes (betrothed) on a Torah (תורה) level, with the Rabbanan being stringent due to a d'rabbanan concern. However, the Ran rejects this reading because the Gemara explicitly calls it a "safek," and the Rambam (רמב"ם) clearly rules that it is a genuine safek kedushin. Therefore, the Ran proposes a different understanding: the Rif is uncertain whether, in all cases of safek kedushin, a get is required mi-d'Oraisa, or whether we can rely on the principle of chezkas isha (the woman's presumptive status). The Ran argues that ordinarily, the principle "ha-motzi me-chavero alav ha-rayah" (the burden of proof is on the one who seeks to extract from another) would allow us to leave the woman in her chezkas penuyah. However, he remains uncertain whether this principle operates with full force in safek kedushin cases.