The Baal Shem Tov and the Amulet
Rav Dovid Moshe of Tshortkov related that when the holy Baal Shem Tov passed through Istanbul on his way to Eretz Yisroel, he heard rumors about certain amulets that Rav Naftali Katz, the Semichas Chachamim, had written.
“How could he dare to use Divine Names in amulets?” people challenged. The Baal Shem Tov asked to see one. When he opened the amulet, he saw that it contained only the handwritten name of the Semichas Chachamim.