President Bashar al-Assad of Syria, who has denied that his government attacked civilians with chemical weapons on Aug. 21, reiterated that denial to the American people on Sunday morning via the television interviewer Charlie Rose.

“He denied that he had anything to do with the attack,” Mr. Rose said on the CBS program “Face the Nation,” hours after interviewing Mr. Assad at the presidential palace in Damascus. “He denied that he knew, in fact, that there was a chemical attack, notwithstanding what has been said and notwithstanding the videotape. He said there’s not evidence yet to make a conclusive judgment.”

No clips from Mr. Rose’s interview were released on Sunday. The interview, which was arranged in the last few days amid a Congressional debate about whether to authorize a limited military strike against Syria, will be broadcast on Monday by CBS and PBS, the same day that President Obama is scheduled to make his case for the strikes in interviews with anchors for six American networks.

CBS described Sunday’s interview with Mr. Assad as his first with an American television network since December 2011, about nine months into the Syrian uprising and civil war, when he spoke with Barbara Walters of ABC. By agreeing to speak to Mr. Rose, Mr. Assad all but assured that his remarks would receive widespread attention from the American news media. The columnist Jeffrey Goldberg commented on Twitter that Mr. Rose “just got the biggest get of the year.”