Healing and the Zaonikiev Icon
According to the synaxarion accounts, Hilarion suffered a disease of the eyes and turned in fervent prayer to the Lord, the Most Holy Theotokos, and the holy Unmercenaries Cosmas and Damian. His prayer was answered when, by a revelation of Saint Cosmas, he was led into the forest to a swampy place where an icon of the Mother of God appeared, from which he received his healing.
The sources record the appearance of the miraculous icon as having taken place on June 23, 1588, and this image came to be venerated as the Zaonikiev Icon of the Mother of God. In gratitude Hilarion cleared the forest thicket at the place of the appearance, erected a cross, and built a chapel in which he placed the icon.