In fact, even more important than bowling is the fielding. You can easily save 50 runs and control the flow of runs/break partnerships from forming and do a whole lot of things if the fielding is good.
One guy like Jonty Rhodes can spread terror in the batsman's mind on whether to go for the shots or not.
Azhar was a strong proponent of good fielding, but it never gained much importance after his exit from the team.