It's an Oldie, Like Most Dwarfs
It's after the fight with the Erinyes devil, and most people are badly hurt. That includes our cleric, who is only still alive thanks to some fortune, and a passing stranger who we were able to persuade to use our healing wand a couple of times. 'Can I get some healing?', asks Thrak, now that the cleric is conscious to hear him.
'You'll regain your level in hit points overnight. How short does that leave you?'
'Well, I am a dwarf. Have I done that one before?' Regardless, Thrak gets some healing. 'Great! I'm fully fit and raring to go! ...to bed. I've just realised it's the middle of the night.'