Day 6 of Donald Trump's criminal trial will begin with a hearing in front of Judge Juan Merchan in which prosecutors will seek to have the former president held in contempt for repeatedly violating the limited gag order in the case.

Prosecutors have argued that Trump violated the limited gag order -- which prohibits statements about witnesses, jurors, and lawyers in the case other than Manhattan District Attorney Alvin Bragg -- on at least ten separate occasions this month, and have asked the judge to hold him in contempt of court and fine him $10,000.

Trump's lawyers have argued that prosecutors have not proven the posts in question were willful violations of the gag order, telling Merchan that the former president was defending himself from attacks by the likely witnesses.

Following the hearing, testimony in the hush money trial is scheduled to resume with former National Enquirer publisher David Pecker on the stand. Prosecutors believe he is key to understanding Trump’s motivation for paying off Stormy Daniels so damaging information did not seep into the 2016 campaign.

Moments after his criminal trial adjourned for the day, Donald Trump exited the courtroom and told reporters that his payments to his former attorney Michael Cohen were appropriately labeled as legal expenses.

"Actually, nobody's been able to say what you're supposed to call it," Trump told the media. "If the lawyer puts in a bill or an invoice and you pay the bill ... that's a very small little line ... it's not like you could tell a life story."

"They marked it down for a legal expense. This is what I got indicted over," Trump said.

The former president also attempted to paint Cohen as an unreliable witness and said he "wasn't very good in a lot of ways" as an attorney.

Trump's motorcade then departed the courthouse.

-Mike Pappano

David Pecker stepped off the witness stand after his initial testimony. He is scheduled to return to the witness stand tomorrow at 11 a.m. ET.

During his brief testimony, Pecker suggested that former National Enquirer Chief Content Officer Dylan Howard -- an alleged participant in the catch-and-kill scheme alleged by prosecutors -- will be unable to testify due to a medical condition.

Pecker appeared to greet Trump and his lawyers as he exited the courtroom.

Court subsequently wrapped for the day.

Trump left the courtroom flanked by Secret Service agents and staffers, as well as Trump Organization General Counsel Alan Garten.

Judge Merchan is scheduled to hold a contempt hearing about Trump’s alleged violations of the case’s limited gag order tomorrow morning at 9:30 a.m. ET.

David Pecker, who once called Donald Trump "a personal friend of mine," flashed a big smile as he took the stand as the trial's first witness, belying the gravity of the moment.

Pecker cackled loudly into the microphone, jolting the room, when prosecutor Josh Steinglass, asked him about his various phone numbers that he struggled to remember.

Pecker, 72, was the publisher of the National Enquirer but prosecutors said he was "acting as a co-conspirator" in helping buy and bury damaging stories about Trump, including a doorman's false claim that Trump had fathered a love child and a Playboy model's claim of a sexual relationship with Trump, who has denied both allegations.

Trump, who once said Pecker would make a "brilliant" choice as editor of Time magazine, listened while leaning forward in his chair, arms crossed on the table, an unhappy look on his face.

Pecker testified that he had final say whether to publish any story involving a famous person.

"I had the final say of the celebrity side of the magazine," Pecker said. "We used checkbook journalism. We paid for stories."

Pecker is testifying pursuant to a subpoena. He has also secured a non-prosecution agreement with the Manhattan district attorney's office.

Donald Trump's lawyer Todd Blanche, during the contempt hearing on the limited gag order in the case, defended the former president's comments by arguing that Trump was responding to political attacks.

"President Trump does in fact know what the gag order allows him to do and not allow him to do," Blanche said. "There is no dispute that President Trump is facing a barrage of political attacks from all sides."

According to Blanche, while the limited gag order prohibits statements about a witness' potential participation in a case, Trump is allowed to make comments in response to political attacks from potential witnesses like Michael Cohen and Stormy Daniels.

"They are talking about their very strong dislike of President Trump," Blanche said about a post related to former Daniels attorney Michael Avenatti's comments on Michael Cohen.

Judge Juan Merchan questioned Blanche about what exactly made Trump's response "political" in nature.

"You believe that everything Mr. Avenatti said does not relate to the trial, but the use of the word 'pardon' makes it political and in a sense authorizes your client to respond?" Merchan asked.

"It's everything. It can't just be a single word," Blanche responded.

"When your client is violating the gag, I expect more than one word," Merchan said.

Conroy asked Merchan to advise Trump that for future violations of the gag order, "incarceration is an option should it be necessary."