What did Materazzi said to Zidane?

In the end, Zidane has the Golden Ball instead of the Trophy.

Although I like to find out what's been said to him by Materazzi, it may be impossible, while it would be very hard to believe Materazzi said nothing special. Either way, it's horrible for Zidane, but more to FIFA who's prompting anti-racism (if it's what's been speculated) throughout the game.

The best comments I've seen regarding on this incident is from comments to a story in the NY Observer:

"... at any rate, what a horrible way to end his career as a god, ... by showing that he is just a man."

According to Wikipedia, here's what the lip readers said:
"Since both players refused to comment on the incident, there are various allegations about what led to Zidane's violent outburst. His agent, Alain Migliaccio has claimed that a "very serious" comment by Materazzi provoked the attack.^[7] Reportedly, the deaf forensic lip-reader Jessica Rees was employed to analyze the video sequences with the help of an Italian translator. According to these reports, Materazzi spoke in Italian - a language understood by Zidane due to his time spent with Juventus F.C. - and first told him: "Hold on, wait, that one's not for a nigger like you." As the players walked forward, Materazzi allegedly said: "We all know you are the son of a terrorist whore." Then, just before the headbutt, he was seen saying: "So just fuck off." ^{[8] [9]} According to Brazilian TV Rede Globo, a lip-reader claimed that Materazzi twice called Zidane's sister a prostitute.^[10] Earlier claims about Materazzi having called his opponent a "dirty terrorist" have been denied by Materazzi, who reportedly said: "It is absolutely not true, I did not call him a terrorist. I'm ignorant. I don't even know what the word means." ^[11][12]"