How Duryodhan became eligible to ask for a boon from Krishn Ji and got Narayani Sena?
I can understand that Dharma was by Arjun's side so he can ask. But why Krishna ji allowed Duryodhana to ask for a boon and gave Narayani sena(which was full of righteous warriors) to Duryodhana. Duryodhana didn't do anything special to ask for it in my knowledge.Did he penance for a boon? If Krishna wants everyone to take the side of righteousness then why give his innocent warriors to evil Duryodhana?