Please note that this story is repeated another date due to a discrepancy in the Yartzeit Date
The Holiness
Rav Yaakov Yosef of Skver used to relate how, when Rav Yissochor Dov of Belz would speak about the Tzaddik, Rav Aharon of Czernobyl, he was seized with such awe that he would shake and tremble. He would become covered in goosebumps and they had to dress him in a warm fur coat because his teeth rattled and his limbs shook!
Rav Yissochor Dov would then relate how Rav Aharon would awaken early and recite the Birkas HaShachar with such intensity that all present could see the Shechina descend upon him! He also told how, as Shabbos Kodesh approached, Rav Aharon’s eyes would shine and glow with the kedusha of Shabbos! (Admorei Belz volume III p. 27–28)
Hiskashrus
Once, a yungerman approached Rav Aharon of Czernobyl and expressed his wish to become miskasher – to attach himself in the bonds of Chassid and Rebbe with the Tzaddik. When Rav Aharon heard this he turned to the Chassid and said, “You want to be tied to me? Let me explain to you what hiskashrus means. When Moshiach comes the Rebbe needs to tie a big, fat gartel around his waist (Chassidim wear the gartel during tefilla and appearing before someone as a sign of respect). The Rebbe will be first in line in the procession to greet Moshiach and whoever is mekushar – tied or bound to the Rebbe – will have to hold on tight to the gartel and approach, walking together with him!” (Otzar Yisrael p. 80:7)