The Rebbe acknowledges the recipient’s birthday and encourages the observance of Chassidic birthday customs, such as giving tzedakah and increasing in Torah study. He then shares a detailed insight from the Alter Rebbe’s wording about involving one’s household in mitzvos, emphasizing the value of enabling others to participate in mitzvah observance—even when not personally obligated—and notes its broader application in many areas.

https://www.torahrecordings.com/rebbe/igroskodesh/015/009/5472