Know, my dear friends, that thank G-d I arrived home in peace on Thursday of last week's portion of Vayishlach. Until now His great mercies have helped us — and all that passed over us, there is no time to explain at present. And there is yet a vision for the appointed time, if G-d wills it.
But my grief is very great on account of his eye pain. And I marvel at him — wonder upon wonder — that he saw fit to go after worthless physicians and to engage in medical treatments with hot applications for the eye pain — which were his undoing, and which worsened his eyes through their treatment even further. And he did not recall all the holy words that issued from the mouth of our holy Master — may the memory of the righteous one be for a blessing — (Sichos HaRan, 50) — to distance oneself from medical treatments with every manner of distancing, to the very last extreme.
My view is that he imagines in his heart that those words were not said regarding eye pain — but in truth, my beloved brother,
Overview: This brief fragment — preserved only in part — is Reb Nussun's letter announcing his safe return from his first journey to Eretz Yisroel. It was written on the 19th of Kislev 5583, Parshas Vayeshev — a date freighted with Breslov significance, as the 19th of Kislev is the yahrzeit and liberation of the Alter Rebbe of Chabad and a general day of Chassidic celebration. The letter breaks off in the middle of a passionate rebuke to his dear friend Rabbi Naftali for seeking doctors for his eye trouble — a teaching Reb Nussun considered binding without exception.
The phrase "there is yet a vision for the appointed time" — drawn from Chabakuk 2:3 — is Reb Nussun's way of promising a fuller account of his journey at a future time, if G-d wills it. He does not elaborate here on what he experienced in Eretz Yisroel. The editor's note confirms that this letter is the primary evidence for the dating of Reb Nussun's first journey and return, making its preservation — even in fragmentary form — historically significant.