Against my better judgment, today's topic is nullifying conversions to Judaism.
joshyuter.com/2018/09/16/spe…
sefaria.org.il/Keritot.9a.4?l…

sefaria.org.il/Keritot.9a.10?…

sefaria.org.il/Keritot.9a.11?…

sefaria.org.il/Yevamot.47a.13…
sefaria.org.il/Bekhorot.30b.4…

joshyuter.com/2018/09/16/spe…
sefaria.org.il/Bekhorot.30b.3…

amazon.com/Conversion-Hal…