You can also see and analyse the game for yourself here:
– Viswanathan Anand vs Garry Kasparov (1996) (Chessgames.com)
4.4 1996 · Sicilian Defense: Najdorf Variation. English Attack Anti-English (B90) · 1-0
Here you can see Kasparov’s reaction to his blunder (at 5:00) :
YouTube