"Attracted To Holiness"
Atara commenting on The Kherson Geniza: Chassidus & Historical Accuracy:
Reb Shmuel Gurarie once bought manuscripts and other items that had been discovered in Kherson, which were thought to have belonged to the Baal Shem Tov and his students. He brought them as a gift to the Rebbe Rashab.
When the Rebbe received them he picked them up one by one, handled each item, and proceeded to identify which of them was authentic.
When he had finished examining all the objects, he told Rabbi Gurarie to show them all to his son, Rabbi Yosef Yitzchok (later to be the sixth Lubavitcher Rebbe).
The items were handed to Yosef Yitzchok in no special order, and he also handled each one in turn. Surprisingly, he made the same selections as did his father, identifying exactly the same items as being authentic.
How had the Rebbe been able to discern the authenticity of the items?
Rabbi Gurarie was intensely curious, but was too shy to ask the Rebbe. He was very close, however, to Yosef Yitzchok, and so he questioned him instead.
Yosef Yitzchok responded:
"Every Jew possesses a certain degree of holiness, and holiness is attracted to holiness. So, when a Jew handles a holy object, the holiness within him is drawn to the holiness within the object."