שלום וברכה!
[ב' אייר תש"י]
שמעתי מכ"ק מו"ח אדמו"ר הכ"מ שקודם ההליכה על ציון ואהל - נוהגין שאין אוכלין אבל שותים*.
נדפסה בלקו"ש חי"א ע' 207. התאריך ע"פ העתקה.
Shalom u'Vrachah!
I heard from my revered father-in-law, the Rebbe hk"m, that before going to the Tziyun and Ohel, it is customary not to eat but drinking is permitted*. Printed in Likkutei Sichos vol. 11 p. 207. The date is according to a copy.
Summary
The letter records the custom of refraining from eating (but not drinking) before visiting the Ohel, as taught by the Previous Rebbe.