When the Bergstein family entered yechidus, in 5715 (1955), the Rebbe addressed the small children in turn.
“How many strings do your tzitzis have altogether?” the Rebbe asked young Chaim Moshe.
When the child responded that he doesn’t know, the Rebbe inquired if he ever received money. Chaim Moshe affirmed that he indeed has gotten money.
“Did you count your money?” the Rebbe asked with a smile.
“Sure,” Chayim Moshe answered.
The Rebbe smiled broadly. “If you count fleeting things like money, surely you should count your everlasting belongings, such as your tzitzis...”
(Teshura Werner Adar 2 5779)