World’s richest man, Elon Musk, has revealed that he is willing to sell his Tesla stock to help end world hunger.

Musk who tops Forbes and Bloomberg’s rich list as of November 1st made the revelation via his verified Twitter handle on Monday.

The Tesla and SpaceX CEO made the remark in response to a challenge by UN World Food Programme director David Beasley.

Beasley, in an interview with CNN last week, called on Musk and the second richest man – Amazon founder Jeff Bezos. specifically, to ‘step up now, on a one-time basis’ to help solve world hunger.

The WFP director said, “$6billion to help 42million people that are literally going to die if we don’t reach them. It’s not complicated.”

According to UK Metro, the amount would equal roughly 2% of Musk’s net worth of $311billion, according to Bloomberg’s Billionaire Index.

Reacting to the challenge on Sunday, Musk twittered: “If WFP can describe on this Twitter thread exactly how $6billion will solve world hunger, I will sell Tesla stock right now and do it.”

He added, “But it must be open source accounting, so the public sees precisely how the money is spent.”

This is just as Beasley reacted, vowing that the WFP has the systems in place for transparency and open source accounting.

Beasley was quoted by the publication as saying that if the world’s top 400 billionaires chipped in, it would take just .36% of their total net worth to prevent famine, an issue affecting 43 nations globally.

“Instead of tweets, allow me to show you. We can meet anywhere – Earth or space – but I suggest in the field where you can see (World Food Programme)’s people, processes and yes, technology, at work,” Beasley said on Monday, adding that “I will bring the plan, and open books.”