Later he won over great and universally recognized rabbinic authorities who became his disciples and attested to both his scholarship and saintliness. These include Rabbi Meir Margolius, chief rabbi of Lemberg and later Ostroha, and author of Meir Netivim (a work of halachic responsa) and other works; Rabbi Yaakov Yosef Hakohen, rabbi of Polnoy; Rabbi David Halperin, rabbi of Ostroha; Rabbi Israel of Satinov, author of Tiferet Yisrael; Rabbi Joseph Heilperin of Slosowitz; and Rabbi Dov Ber of Mezrich to whose great authority as a Talmudist it was chiefly due that Besht's doctrines (though in an essentially altered form) were introduced into learned circles. Noteworthy is that the renowned Sefardic Rabbi Chaim David Azulai (Chida) cites the Baal Shem Tov in his works in great laudatory terms.
Source: Wikipedia > Baal Shem Tov
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