The scandal, later dubbed sandpapergate, remains one of the most damaging episodes in Australian cricket. Khawaja's account places knowledge of the ball-tampering beyond the three men who served suspensions.
He framed the comments as a call for shared responsibility rather than a reopening of official inquiries. Cricket Australia's original probe focused on Bancroft, Smith and Warner.
Cummins's October comment indicated the current captain had been told in advance that Khawaja was writing. Cummins did not expand on the contents.
The 33-year-old left-handed batter wrote that the episode had gone on too long and it was time to move on, adding he had no concerns about further revelations. He said it was all dealt with then and the team had moved on.
Khawaja's remarks add a player's first-hand view of how the dressing room reacted once cameras exposed the sandpaper. He said the team had already answered every question many times. Khawaja's core claim is that knowledge of the sandpaper was not confined to a few players. He said the whole group had to own it as a team.
The batter insisted the matter was settled at the time. He said he felt no worry about what a book might bring out years later.