Audio Roundup Special: Mesirah
by Joel Rich
Rabbi Daniel Fridman-Mesirah
https://www.yutorah.org/lectures/lecture.cfm/1176065
Mesirah Part I: The Roots of the Sugya
Is mesira about lives or money? Is the “penalty” of death due to rodef status or kanai pursuer?
https://www.yutorah.org/lectures/lecture.cfm/1176064
Mesirah Part II: The View of Rambam
The Rambam codifies moser killing to include money, even when bet din is not enforcing capital punishment. He first states it as being permitted, but after the individual is warned, he states it is a mitzva.
https://www.yutorah.org/lectures/lecture.cfm/1176609
בעניין מסירה חלק ג׳: מעשה דרב כהנא
The gemara reports that Rav warned someone not to be moser to non-Jewsanother Jew’s money, but the individual said he was going to do so. Rav Kahana then killed the individual — was it preemptive or because the Jew who he would moser would eventually be killed by the non-Jews.
https://www.yutorah.org/lectures/lecture.cfm/1176847
Mesirah (Part IV) – Thorns from the Vineyard
R’ Elazar bar Shimon worked for the government arresting criminals (including Jews). Should he have been considered a moser?