זאת תהיה תורת המצרע ביום טהרתו והובא אל הכהן ויצא הכהן אל מחוץ למחנה וראה הכהן והנה נרפה נגע הצרעת מן הצרוע (מצורע יד: ב-ג) 

Reb Feivish Yavraver zt’’l (a grandson of the Sar Shalom of Belz zt’’l) was very sick and needed to travel to Vienna to be healed and treated by its great doctors.  While he was receiving medical treatment in Vienna, Maran Reb Yissocher Dov of Belz zt” l, along with many Belzer Chassidim, continued to inquire about Reb Feivish’s health and davened for his well-being and healing.  In the merit of everyone’s prayers, Reb Feivish was healed and left Vienna. 

Reb Feivish stopped over in Belz on the way home to thank Maran Reb Yissocher Dov of Belz for his tefilos and brachos. During the Friday night tish, the Frierdiga Rav spoke about the healing of Reb Feivish and said: “When one comes to a tzaddik to daven for a חולה – a sick person and the person is healed, the tzaddik shouldn’t think that in the merit of his tefillos, the ill person was healed – he has to believe that the healing was in the sick person’s merits. The same holds with the ill person –  he shouldn’t believe that his merits healed him, just that the merits of the tzaddik’s prayers healed him.”

A tzaddik can be compared to a Kohen.

This is what the passuk alludes to: “זאת תהיה תורת המצרע” – refers to the חולה – sick person, “ביום טהרתו – when he is healed from his ailment, “והובא אל הכהן” – he has to believe his healing came in the merit of the tzaddik.  But a tzaddik has to believe that “ וראה הכהן והנה נרפא הצרעת” – when the tzaddik sees that the ill person was healed, he has to believe that “מן המצרע” – it happened in the merit of the ill person himself.