The U.S. ambassador to the European Union, Gordon Sondland, intends to tell Congress this week that the content of a text message he wrote denying a quid pro quo with Ukraine was relayed to him directly by President Trump in a phone call, according to a person familiar with his testimony.

Sondland plans to tell lawmakers he has no knowledge of whether the president was telling him the truth at that moment. “It’s only true that the president said it, not that it was the truth,” said the person familiar with Sondland’s planned testimony, who spoke on the condition of anonymity to discuss sensitive diplomatic matters…

The person familiar with Sondland’s testimony said the ambassador “believed Trump at the time and on that basis passed along assurances” that Trump was not withholding military aid for political purposes.

Sondland is expected to say that for months before the Sept. 9 message, he worked at the direction of Rudolph W. Giuliani, Trump’s personal attorney, to secure what he would call in another text message the “deliverable” sought by Trump: a public statement from Ukraine that it would investigate corruption, including mentioning Burisma, a Ukrainian energy company, by name. In exchange for the statement, the president would grant Ukraine’s new president a coveted White House audience.

“It was a quid pro quo, but not a corrupt one,” the person familiar with Sondland’s testimony said.