Lord Dharma and Yudhisthra
Yakhsa Prashna, Dharma Baka Upakhyan: appears in the Mahabharata, in Book of Forest (Aranyaka Parva ~ Vana Parva).
One day while living in exile in the forest, Yudhisthira finds that while attempting to drink water from a lake, his all brothers have been killed. When he went near the lake to fetch some water, he heard a sudden voice, (of Yaksha who is in disguise).
Yaksha said: This Lake belongs to me; I have asked your brothers to answer my questions before drinking the water. But they denied my pledge, and drank water and hence they are dead. You too will become victim if you do not answer my question before drinking this water.
Yudhisthra replied: I have no desire to take what belongs to you. Please ask me the questions; I will try my best to reply your queries. These questions and answers are precise, beautiful, and embedded with sophisticated deep wisdom and philosophy.
The focus of this entire discussion is on Dharma.