Two sources also said that Schiller spoke of the conversation to push back against allegations that Trump had engaged with a number of Russian prostitutes in a Moscow hotel room, asking them to urinate on the bed, a place where President Obama once slept.
Schiller said he took the offer as a joke and told the meeting participant who made the offer "We don't do that type of stuff".
During the testimony, Schiller said both he and Trump were aware of the possibility of hidden cameras being set up in the hotel room, according to the report. After standing outside the hotel room for a time, Schiller himself then went to bed, confirming that he could not say for sure what may have happened in Trump's room the rest of the night.
"Oh, my God, that's bullsh*t", Schiller said, according to two sources who informed NBC News.
Members of the committee raised the matter because of salacious allegations laid out in a dossier compiled by former British agent Christopher Steele, an opposition research document funded by Democrats detailing alleged ties between Trump and his associates with Russians.
Three sources spoke to NBC News about what Schiller recalled about the aftermath of a meeting Trump held years ago when he was in Russian Federation to set up the 2013 Miss Universe Pageant.
"We are appalled by the leaks that are coming from partisan insiders from the House Intelligence Committee", Stuart Sears told the channel. He was asked who made the offer, but he could not recall the identity of the individual, sources said.
According to sources with direct knowledge of Schiller's four-hour long testimony before the House Intelligence Committee, the former director of Oval Office operations adamantly rejected numerous allegations made in a collection of explosive memos written by Christopher Steele, a veteran British spy, alleging ties between the Trump campaign and Russian Federation.
In a statement to NBC News, Schiller's lawyer questioned the credibility of the House Intelligence Committee.
Trump's bodyguard Keith Schiller has been by the side of the real estate tycoon and president through thick-and-thin.