By Edward Chaykovsky

There is no end in sight for the ongoing feud between former best friends, rapper/promoter 50 Cent and pound-for-pound king Floyd Mayweather Jr. The two of them were feuding heavy last year. The initial tension stems from a disagreement over a business venture.

Their feud kicked off again a few days ago. It all began when 50 Cent took to Instagram and challenged Mayweather to read a full page of a Harry Potter book without error. If the challenge was satisfied, 50 Cent promised to donate $750,000 to a charity of Mayweather’s choice.

"Floyd will you [accept] my ALS/ESL CHALLENGE: I will donate $750k to a charity of your choice, If you can read a full page out of a Harry Potter book out loud without starting and stopping or f***ing up. lmao," he wrote in the caption for the video.

Mayweather responded on the social networks by posting two checks, related to his fights from May and September of 2013.

“Read this $72,276,000.00. God Bless,” Mayweather tweeted along with the photos of the checks.

Mayweather's response generated a very hostile reaction from 50 Cent.

“You put up a check? That must be for a blogger. N***a, you know I got money,” said 50 in a video post. “Look b*tch, the check say Golden Boy. That mean you work for Oscar [De La Hoya] b*tch?”

50 Cent then posted a meme that reads, “I don’t hold grudges. I remember facts.”