In the 2000s Nas and Jay Z had an EPIC WAR against each other - all over Nas baby's mother Carmen Bryan. You see both rappers were having relations with her at the same time, and it caused a war.
The battle is long over, and Nas and Jay are friends now. And as for Carmen, well she still looks PRETTY GOOD!!
The legendary Jay/Nas beefeventually ended with a 2001 rap classic called “Ether.” In 2006 Bryan published the extraordinarily juicy autobiography It’s No Secret: From Nas to Jay-Z, From Seduction to Scandal, a Hip-Hop Helen of Troy Tells All, where she talks about keeping Z as HER sidepiece.