that aint really bitin- it's bitin if he takes a lot of a verse
if u think thats bitin, listen to sugarhill gang's "rapper's delight"
almost every line from that has been "bitten" by another rapper- generally they expect people to know where its from, they don't claim credit (ex. fat joe's gasolina line in "so much more"
anyways, jay-z prolly ghostwrote the whole album so it doesnt really matter