Rakshasas Report Bhima's Deed to Kubera
The defeated rakshasas flee to Kailasa and report Bhima's strength and valour to Kubera, expecting punishment. Instead, Kubera laughs and tells them to let Bhima take as many lotuses as he wishes for Draupadi — he knows the reason. The rakshasas return, their anger controlled, to find Bhima sporting happily alone in the pond.
The krodhavashas (wrathful beings) had been overcome by Bhima's strength. They fled to the peak of Kailasa and approached the lord of riches, extremely frightened, and told him everything about Bhima's valour and strength in battle.
They described how the Pandava had ignored their warnings, plunged into the pond, and fought them with his club. They told Kubera how he had slain hundreds of their foremost warriors and scattered the rest, how he had drunk the amrita-like water and gathered the sougandhika lotuses as if the garden belonged to him.
Kubera listened. Then he laughed.
"Let Bhima take as many lotuses as he wishes for Krishna (Draupadi)," he told the rakshasas. "I know the reason."
The rakshasas took their leave of the lord of riches. Their anger controlled, they returned to the foremost among the Kurus. They found Bhima alone in that pond full of lotuses, sporting happily. Aranyaka Parva, Chapter 449