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23 Tevet
> 5712–1952, the Rebbe advised an individual whose doctors were not treating his deteriorating eyesight to find a new doctor. “Besides for that,” the Rebbe continued, “I suggest that you join public Torah classes and you should also regularly study or read at least a few lines of Tanya and Zohar. And I hope you will be able to share good news about your sight.”
1. Igrot Kodesh vol. 5 p. 154