Learning Torah From Gazing at a Tzaddik

Rav Moshe Teitelbaum of Uhel taught in the name of Rav Menachem Mendel that a person who merits true knowledge (daas sheleimah), when he sees a Tzaddik and gazes upon him, can learn true Torah from every limb of the Tzaddik. Rav Menachem Mendel testified that he himself learned Torah in this way from his own Rebbe, Rav Elimelech of Lizhensk.