In this Dharma talk given at the Auckland Zen Centre, Richard von Sturmer explores how Zen masters approach death and how their dying can act as their final teaching. Richard's title refers to the famous exchange between Master Mazu and his attendant, recorded in the Blue Cliff Record:

Blue Cliff Record, Case 3

Great Master Ma was unwell. The temple superintendent asked him, “Teacher, how has your venerable health been in recent days?”

The Great Master said, “Sun Face Buddha, Moon Face Buddha.”

Automated transcript

https://otter.ai/u/dLq33lJrz09DGO_OCI6BP4KCCWc