The yaksha asks Yudhishtira : What is the most surprising thing?
To which Yudhishtira answers thus:
Ahanyahani bhootaani gacchanteeh yamaalayam
Sheshaaha sthavaram icchanti kimaashcharyam ataha param
This translates loosely into: Everyday many living being die (go to the abode of Yama) and the rest of us see this and yet the rest of us live and behave as if we are immortal.