The two tried to lay the blame on each other during the trial, which concluded with Butt being jailed for two and a half years while Asif getting a one-year sentence.
"There is a certain gallows humour about the situation. They had no choice, it's the prison authorities who make the call. The batsman and the bowler remain together but with no room for a run-up let alone room to overstep the mark," a prison source was quoted as saying by 'The Daily Mail'.
In the witness stand during the trial, Asif had accused Butt of abusing him before he bowled the second of the three pre-determined no balls in conspiracy with convicted bookie Mazhar Majeed, who has been sentenced to 32 months in prison.
At that time, Butt's lawyer Ali Bajwa QC had suggested that Asif was fabricating his story to justify the no-ball. Bajwa had also accused Asif of "untruthfully downplaying" his relationship with the Majeed brothers.
Asif had also insinuated that Butt had to have been involved with an alleged fix to bowl no-balls in a Test match.
"The captain knows. What I have told you the last two days...the captain knows. He is the one who brings them (bowlers) on," he had stated in the Southwark Crown Court during the trial.