The Yaksha asked,—‘What is that which sojourneth alone? What is that which is re-born after its birth? What is the remedy against cold? And what is the largest field?’ Yudhishthira answered,—‘The sun sojourneth alone; the moon takes birth anew: fire is the remedy against cold: and the Earth is the largest field.’

In plain words: Yudhishthira answers more riddles: the sun travels alone, the moon is born again each month, fire is the cure for cold, and the Earth is the biggest field.