The Vilna Gaon and the Tzemach Tzedek Wrestle Over the Yarmulka
Rabbi Mendel Krasnjanski
Source Sheet Stories from the Gemara about head covering Does the Gemara's reference to head covering refer to a Yarmulka or to something more? Is wearing a Yarmulka an obligation or "Midas Chassidus"? Does it depend where you are or what you're doing? Does covering your head with your hand work? Drama over the Teshuva of the Tzemach Tzedek