Jay-Z has always been protective over his ingenue Rihanna, so it comes as no surprise that the rumor mill is spinning that Hov gave Chris Brown a stern talking-to when he accompanied Rihanna to Jay's show at the Barclay's Center. According to The Sun, Jay invited Chris to the show, so he could talk to Chris in person about his relationship with Rihanna.

During their conversation Jay reportedly told Chris, if he hurt Rihanna again he would "end his career." As for Rihanna, Jay allegedly told her that if Chris makes her happy she should "go for it."

Source: allhiphop.com