Dei'ah veDibur - Information & Insight

A Window into the Chareidi World

8 Adar II 5760 - March 15, 2000 | Mordecai Plaut, director Published Weekly








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Sefer Yesod Hataharo -- The Foundation of Purity
by Yated Ne'eman Staff

When the holy Reb Uri of Strelisk stated that he reviewed the laws of taharo 1,000 times, his intention was to stress the importance of acquiring complete expertise in these laws.

HaRav Hillel Vertheimer of Bnei Brak has invested much effort and hard work to inspire the learning of these laws. He started by establishing shiurim in his own home, delivered by HaRav Moshe Shaul Klein, rav of the Or Hachaim neighborhood and a close disciple of HaRav Shmuel Wosner and one of the leading morei horo'oh in Eretz Yisroel. Many of those men who covered the laws together with HaRav Klein at these shiurim were given permission to deliver their own shiurim, and some even received smicha to make halachic rulings regarding questions of purity.

The chain continued with many new shiurim delivered by HaRav Klein's graduates sprouting up in different towns in Eretz Yisroel, and the importance of these laws became accepted by many.

Gedolei Yisrael praise the shiurim network in a special letter of appreciation that "in the merit of these shiurim, many have become more stringent in keeping these laws." HaRav Shmuel Wosner writes that "my heart and soul are with those who act and help others; they increase the honor of Hashem and benefit Jewry."

After the sweeping success of HaRav Klein's shiurim, HaRav Hillel Vertheimer has proceeded to disseminate this important information to even more people by printing the shiurim as a book: Yesod Hataharo. The sefer is written in a lucid and easy style for all to understand and is updated in compliance with the rulings of HaRav Klein's Rebbe, HaRav Shmuel Wosner.

True to its name Yesod Hataharo, the sefer contains the basic and vital laws of taharo, including the laws and different customs of each community.

HaRav Moshe Shaul Klein writes in his words of approbation, "I have toiled to scrutinize every letter in the sefer, so that the text is clear for every reader and faithful to the precise meaning of the halacha."

the second part of the book contains the work of HaRav Moshe Tuvia Dinkel, rav of Bayit Umenucha in Beit Shemesh, which explains and shows the sources of the laws written in the sefer.

The author, HaRav Vertheimer, concludes the book with letters from gedolei Yisroel from the previous generation, including HaRav Shaul Brach, the Keren LeDovid of Satmar and the Chakal Yitzchok of Spinka to the author's grandfather and namesake, HaRav Hillel Vertheimer Hy"d, concerning the building of mikvehs.

A call from the present day gedolim to learn and review hilchos taharo completes the book.

HaRav Steinman and HaRav Lefkowitz write that "all who learn these laws are guarded from Heaven not to transgress them even inadvertently."

HaRav Nosson Gestetner quotes the words of the Kesef Mishna that, in the World to Come the main rewards for studying Torah laws are conferred on those who study the laws of taharo.

The easy language, the rulings of leading rabbinical authorities and the organized design of the book mark the sefer as practical for maggidei shiurim and rabbonim as well as the layman.


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