“You'd take the clothes off my back and I'd let you
You'd steal the food right out my mouth and I'd watch you eat it
I still don’t know why, why I love you so much, ohh”

Jay-Z – Holy Grail Lyrics on LyricsMode
He's saying that she could take everything he has, but he'd still love her just as much. It might also mean that she's been taking advantage of him and he's just been letting it happen because he loves her so much. Either way, he doesn't really want to let her go because she's everything to him.