ב"ה, י"ד מ"ח, תשט"ז
ברוקלין.
שלום וברכה!
...במ"ש אודות הפרישות, הנה ישאל בזה את המרא דאתרא, כי, בכלל, אין דעתי נוחה מהנהגה כזו, ומכמה טעמים. ויציע להמרא דאתרא את כל הטענות והפרטים בזה, ויעשו כהוראתו...
B"H, 14 Iyar, 5716.
Brooklyn.
Shalom u'Vrachah!
Regarding what you wrote about abstinence: you should ask the mara d'asra (local rabbinic authority) about this matter, because in general, I am not pleased with such conduct, for several reasons. Present all the arguments and details to the mara d'asra, and act according to his guidance.
Summary
The Rebbe teaches that when considering practices of abstinence or similar personal stringencies, one should consult their local rabbinic authority with full transparency and follow his direction rather than acting independently.