Harav Aharon Schenkolewski

Rav of Hilchos Brachos, Issur Vheter

Harav Aharon Schenkolewski

Harav Aharon Schenkolewski

Harav Schenkolewski has been teaching since 2001 Hilchos Issur V’heter, Nida, Pesach, Maachalei Akum, Hechsher Kailim, Hagalas Kailim and Daled Minim to people around the world.  He has written shiurim and summaries of these halachos in both English and Hebrew.  Rav Schenkolewski learned Issur V’heter under the tutelage of Rabbi Elimelech Kornfeld, currently Rav of the Gra shul in Ramat Beit Shemesh and was tested by Rav Moshe Halberstam, zt”l of the Eida Hachareidis and Rav Zalmen Nechemiah Goldberg shlita.

Rav Schenkolewski was born in Lakewood , NJ in 1970.  After learning in Yeshiva Beth Moshe of Scranton, PA for high school, he spent time in beis medrash by both Rabbi Knobel of Hewlett, NY and then Telshe Yeshiva Beis Medrash in Chicago, IL.  In 1993, he married Shushi Roberg of Detroit and moved to Eretz Yisrael where he has had the zechus of living – and learning – ever since.

In 1998, the Schenkolewskis moved to Kiryat Sefer where Rav Schenkolewski learned Hilchos Nida under Rabbi Yisroel Zicherman shlita, rav of Achuzas Brachfeld and was tested by Rav Nissim Karelitz.  He has been attending the weekly shiurim of the Av Beis Din of Kiryat Sefer, Harav Shlomo Zalman Ulman for the past five years, learning and reviewing Hilchos Nida, Yichud, Hagalas Kailim, Ta’aruvos Chametz and Mechiras Chametz.


Harav Dovid Ostroff

Rav of Hilchos Shabbos

Harav Dovid Ostroff

Harav Dovid Ostroff

Harav Ostroff has learned in Rav Ezriel Auerbach’s kollel for over 10 years, and was tested on Hilchos Shabbos by Rav Stern, Bnei Berak and the Rabbanut. He has been learning chavrusa with Rav Ezriel Auerbach since ’94 and has been Moreh Hora’ah (under Rav Sternbuch shlita) since approx. ’96.  He has been teacing Hilchos Shabbos since 2001 to people around the world.

Rav Dovid Ostroff was born in Johannesburg, South Africa.  He spent his yeshiva years in Yeshivas Kol Torah under the leadership of Hagaon Rav Shlomo Zalman Auerbach zt”l, with whom he had a very close relationship.  He learned in kollel for the sum of 18 years in which time he learned many halachos subjects.

Rav Ostroff learned Hilchos Niddah in kollel “Ner Yisrael” in Bayit Vegan for two years and was tested by Hagaon Rav Moshe Halberstam zt”l and the Rabbanut. He did shimush to pasken shailos by Rav Menachem Mendel Fuchs from Ramot, followed by Rav Vozner’s Beis Hora’ah for 3 years, and was given heter hora’ah from Hagaon Rav Sternbuch shlita to pasken shailos.

Rav Ostroff has taught various shiurim around Yerushalyim for many years.  He has taught in various girls seminaries as well including Bnos Sarah, Nevey Yerushalyim for three years, Ma’a lot, Nevey yerushalyim since ‘87 and is now teaching and co- principal in Me’ohr Seminary.


Dayan Yitzchok Tzvi Oshinsky

Rav of Dayanus, Kiddushin, Aveilus

Dayan Yitzchok Oshinsky

Dayan Yitzchok Oshinsky

Dayan Yitzchok Oshinsky has been Dayan in Beis Din Harabani in Haifah since 2007 and was appointed Av Beis Din in 2015. He has published many seforim including, Orchos Mishpat, Hilchos Aveilus, Oros Mishpat and B’asher hu sham.

Dayan Oshinsky learned in Yeshiva Chevron under Hagaon Rav Simcha Zissel Broide Zt”l, Hagaon Rav Avraham Farbshtein Zt”l (with whom he had a weekly chavrusa) and Hagaon Rav Dovid Cohen Shlit”a. He then learned Rabbanus and Dayanus in Nishmas Yisrael, Bayit Vegan under Hagaon Rav Avraham Cohen shlit”a.

Dayan Oshinsky received Semicha from the Rabbanut, Harav Yitzchok Kulitz Zt”l, Harav Zalman Nechemiah Goldberg Shlit”a and Mifal Hashas and Yadin Yadin from the Rabbanut.

He currently lives in. Bayit Vegan


Rabbi Eliezer Greenwald

Assistant Rav Issur V’heter Program, Editor Choshen Mishpat Program

Rabbi Eliezer Greenwald

Rabbi Eliezer Greenwald learned in Mesifta Beth Shraga of Monsey, New York and in Yeshivas Mir Yerushalyim, under HaRav Asher Arieli. In 2009, he moved with his wife and children to Kiryat Sefer, and continued his learning in Kollel Toras Avos and Kollel Libo Chofetz, where he gained much of his knowledge in Shulchan Aruch and Halacha.

In 2014, Rabbi Greenwald received Yoreh Yoreh Semicha from the Rabbanut, and subsequently received the Rav Ha’ir Semicha as well. He has shimush from Rav Elchonen Peretz and Rav Ofir Malka in Bais Hora’ah Sharai Halacha U’mishpat, and currently attends the weekly shiur of Rav Shlomo Zalman Ulman, thus further enhancing his breadth of knowledge on the practical levels of Hilchos Shabbos, Nida, and Issur V’heter.  Additionally, he received Mashgiach Kashrut certificate from the Rabbanut.   He is currently studying Choshen Mishpat, working towards the Semicha of Yadin Yadin, reflecting his passion for learning and living within the daled amos of Halacha.

Rabbi Greenwald’s passion for elucidating halacha and his commitment to accomplishment, accountability, and accuracy in learning has helped make Yeshivas Iyun Halacha Choshen Mishpat shiurim the high level that they are.

Current Programs:



Issur V'heter


Choshen Mishpat






Tevilas Kailim/Hechsher Kailim


Harav Aharon Schenkolewski
Rosh Hayeshiva

Dayan Yitzchok Tzvi Oshinsky
Rav of Dayanus, Kiddushin, Choshen Mishpat and Aveilus Programs

Harav Dovid Ostroff
Rav of Shabbos and Eiruvin Programs

Rabbi Shmuel Simenowitz

R' Dovid Engel



Contact Information:

Phone number: 973-878-0142

Email address: info@iyunhalacha.org