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.

"Do you know someone by the same of Stephanie Clifford?"

The question, by assistant district attorney Josh Steinglass, was the jury's introduction during the evidentiary phase of the trial to the woman whose long-denied claim of a sexual tryst with Donald Trump set in motion the alleged falsification of business records.

"Stormy Daniels is, or was, a porn star," former National Enquirer publisher David Pecker replied, using Clifford's stage name.

Pecker was having dinner with his wife on a Saturday night in early October 2016 when he said he received an urgent call from National Enquirer editor Dylan Howard.

"He said that she, she being Stormy Daniels, is trying to sell a story that she had a sexual relationship with Donald Trump, and Dylan can acquire the story for $120,000 from Keith Davidson if we made a decision right now," Pecker recalled.

In a series of text messages the jury saw, Howard told Pecker, "I know denials were made in the past but this story is true."

Pecker replied to Howard, "We can't pay 120k." The company had already paid $30,000 for the Dino Sajudin story and $150,000 for the Karen McDougal story, and Pecker recalled thinking, "I am not a bank."

In the text exchange, Howard responded, "Perhaps I call Michael and advise him and he can take it from there, and handle."

Pecker texted back, "Yes a good idea."

Pecker recalled having "a number of conversations" with Michael Cohen about Stormy Daniels. Cohen wanted Pecker to catch and kill the story.

"I said, 'I am not purchasing this story, I am not going to get involved with a porn star,'" Pecker testified he told Cohen. "He was upset and said the boss would be furious with me."