Bhagavad Gita, Chapter 18, Verse 76

O King, as I remember and remember this wonderful and holy dialogue between Keshava and Arjuna, I rejoice again and again.

Real joy here is described as renewable, arriving again each time this conversation is recalled, not fading with repetition.

Sanjay doesn't describe this as a memory that dulls with time, he names ongoing, real delight every time he returns to it. Real richness is shown surviving repetition.