In his memoirs -- titled 'The Close of Play' -- Ponting said he didn't understand why Tendulkar vouched for Harbhajan during the appeal hearing but did not say anything when match referee Mike Procter initially suspended the spinner for passing allegedly racial comments at all-rounder Andrew Symonds.
"I couldn't understand why Sachin didn't tell this to (match referee) Mike Procter in the first place," Ponting, captain of Australia at that time, wrote on the role of Tendulkar, who would retire from the game after his 200th Test next month.
Ponting is not the first cricketer to question Tendulkar's role in the scandal as retired wicket-keeper Adam Gilchrist had taken a similar view in his autobiography five years ago.
Ponting, in his recollection of the drama that unfolded, said he found it absurd when Harbhajan was merely fined after the incident which threatened to hurt the relations between the two countries.