Avraham Dovid Rozenblat is addressed in the correspondence of the Lubavitcher Rebbe, Rabbi Menachem Mendel Schneerson, as a distinguished Chassidic individual. The Rebbe refers to him with honorific titles, indicating his respected status within the Chassidic community.
The Rebbe's letter to Avraham Dovid Rozenblat, dated 26 Kislev, 5715 (1954), expresses gratitude for a Havdalah ceremony and draws a connection between the concept of "eight distinctions" found in Torah sources (Pesachim 104a; Sefer HaMitzvos, Milah ch. 85) and the future era when the harp of King Moshiach will have eight strings. The Rebbe blesses Rozenblat and encourages anticipation for this elevated spiritual time, reflecting a tone of warmth, appreciation, and inspiration rooted in Chassidic teachings.