The Rebbe encloses a Kuntras for Chanukah, encouraging the recipient to illuminate their surroundings with Torah. He draws parallels between the Previous Rebbe’s work and the Chanukah lights—continuously increasing, reaching outward, and bringing light to darkness. He emphasizes that blessings reside in this effort and concludes with wishes for ever-growing light until the ultimate redemption.

https://www.torahrecordings.com/rebbe/004_igros_kodesh/teves/845