Trump been sworn in as a witness for a hearing Judge Engoron is holding on whether he violated the limited gag order Engoron imposed earlier in the trial.

The former president then took the stand.

After Judge Engoron raised concerns that Trump had possibly violated the limited gag order the judge had imposed during the trial, Trump and his lawyers remained inside the courtroom at the start of the lunch break for a 25-minute conference that was sealed to the press.

Afterward, when asked by reporters about the private conference, Trump responded, "I can't tell you."

Trump otherwise praised his lawyer's cross examination of Michael Cohen, who admitted he lied under oath on multiple occasions.

"That was a Perry Mason moment," Trump said.

Defense attorney Alina Habba's cross-examination of former Trump attorney Michael Cohen featured frequent objections, cross talk and nonresponsive or argumentative answers that often breached customary courtroom decorum.

"You didn't ask me a yes-or-no question," Cohen scolded Habba at one point. "Yes I did," Habba shot back.

Cohen at times resisted answering questions, either objecting to them or insisting he did not understand them, while Habba paced the floor, blaring her questions into a hand-held microphone as Trump observed from the defense table.

"President Trump makes you relevant," Habba chastised Cohen. "If you didn't work for President Trump you wouldn't make most of your income today."

Cohen eventually conceded that he makes his living because of his prior relationship with Trump.

"Outside of your two podcasts, your merchandise and your books, is there any other form of income in your life?" Habba asked. "No," Cohen answered.

Habba's cross-examination concluded with a pointed question meant to question Cohen's motive for cooperating with the attorney general's investigation.

"Did you ever ask President Trump to pardon you while he was in the White House?" Habba asked.

"No," Cohen said.

"And he didn't pardon you?" she asked.

"No," Cohen replied.

After the first break of the day, Judge Engoron threatened to penalize Trump after what Engoron said was a "dangerous disobeyal" of the gag order he imposed prohibiting comments about his staff.

"I am very protective of my staff, as I should be. I don't want anybody killed," said Engoron, who handed down the limited gag order earlier in the trial after Trump made a social media post about his clerk.

Citing Associated Press reporting, Engoron expressed concern that Trump made a comment in the hallway about "a person who is much more partisan sitting alongside him."

Since Engoron's clerk usually sits to his right, the judge interpreted Trump's comment as referring to her.

"It is very easy for the public or anyone to know who this person is," Engoron said.

Trump's attorney Chris Kise said there was a misunderstanding, clarifying that Trump was referring to Michael Cohen, who has been sitting in the witness stand to Engoron's left. Kise attested that Trump confirmed to him that he was referring to Cohen.

"That's the way I read the statement," Kise said. "He is tired of listening to what he is hearing. It is very partisan."

Engoron did not impose any penalty and took Kise's explanation "under advisement."

After claiming a net worth of $8 billion, Donald Trump declined to share his financial statements with bankers related to his $1 billion bid to purchase the Buffalo Bills football team in 2014, according to documents presented at trial and testimony from Morgan Stanley executive K. Don Cornwell.

Of the 86 parties contacted to potentially bid on the Bills, Trump was one of six parties to make a final bid, according to a Morgan Stanley document shown at trial.

However, when Morgan Stanley attempted a close review of Trump's bid, Trump declined to provide his financial statements.

"We feel it is premature to sign the consent release forms until such time as we know that Mr. Trump is the final bidder," then-Trump attorney Michael Cohen said in a 2014 email shown at trial.

During a management presentation with Bills' leadership, Trump instead handed out a Forbes magazine list to support his bid, according to Cornwell.

"He gave us handouts of the Forbes list of the top-paid entertainers," Cornwell said.

Trump eventually lost his bid to purchase the football team to billionaire Terry Pegula, who outbid Trump by $400 million.

During cross-examination, Cornwell acknowledged that a lawsuit Trump previously brought against the NFL, as well as his affiliation with casinos, also limited the likelihood of his success.

"You thought that President Trump had little chance of being approved by the NFL?" defense attorney Ivan Feris asked.

"Yes," Cornwell replied.

Trump's lawyers have argued that his bid to purchase the Bills -- which has featured prominently in the testimony of other witnesses -- is irrelevant to the conduct alleged in the attorney general's lawsuit.

"It is the defense position that none of this relates to a cause of action in this case," Feris said.