The Rebbe congratulates the recipient on their wedding anniversary on Chai Elul, explaining its significance as infusing vitality into the service of Elul. He elaborates on the three pillars of Torah, Avodah, and Gemilus Chasadim, and blesses the recipient for a good and sweet year.
https://www.torahrecordings.com/rebbe/igroskodesh/011/012/3777