Well, when I first read about this, I thought Fabolous was giving props to FP, but it's actually just a standard freestyle that doesn't say too much. It opens with FP's lines from Pursuit of Happyness and ends with a really weak metaphor. BUT, for those who care...
http://www.xxlmag.com/rap-music/new-music/2014/12/fabolous-will-smith-freestyle/