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Yitzchak Abadi

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Adapted from the English Wikipedia article Yitzchak Abadi, available under CC BY-SA 4.0Updated 1 December 2025
Yitzchak Abadi
Born (1933-03-12) March 12, 1933 (age 93)
Venezuela
Occupation(s)Orthodox Jewish Rabbi, Posek
Known forHalachic rulings and leadership in Orthodox Judaism

Yitzchak Abadi (born March 12, 1933) is an Orthodox Jewish Rabbi and Posek, esteemed as a foremost authority within Orthodox Judaism both in the United States and internationally.

Early life

Abadi was born in Venezuela and relocated with his family to Tiberias, Mandatory Palestine when he was two years old. His education included studies in Haifa, followed by attendance at Yishuv Hachdash in Tel Aviv and Yeshivat Chevron located in Jerusalem. At the age of 19, the Chazon Ish directed him to pursue learning in Montreux, Switzerland, and after one year, he continued his studies under Rabbi Aharon Kotler in Lakewood, New Jersey.

Influence

Abadi is recognized as a distinguished posek whose disciples span the globe. After the passing of Rav Kotler, he emerged as a principal halachic decisor in Lakewood. In 1980, he established a leading halacha Kollel there, which was later moved in 1993 to Har Nof, Jerusalem. This institute focused on training scholars capable of resolving intricate Jewish legal matters. He made his return to Lakewood in 2009.

Notable decisions

Abadi is noted for his rulings on complex halachic topics, introducing several groundbreaking decisions. Among these are his approval of producing a sefer torah using silk screen techniques and his determination that wigs crafted from Indian hair meet halachic standards. Additionally, he authored a shortened version of Birkat Hamazon grounded in the teachings of the Rambam and other Rishonim, providing an alternative for situations where reciting the full text is challenging.

Works

  • Ohr Yitzchak – Two volumes
  • Booklet on Niddah Laws
  • Birkat Hamazon Hakatzar (inspired by the perspectives of Rambam and various Rishonim)

External links

  • oheltorah.com – A kashrut and halachah resource managed by Rabbi Abadi’s sons, featuring a Q&A platform that reflects Rabbi Yitzchak Abadi’s rulings.