Sunan Abi Dawud Book 2, Hadith 359
He raised his hands once in the beginning. Some narrated: (raised his hands) once only.
Abdullah ibn Mas'ud said: Should I not pray for you the way the Messenger of Allah (ﷺ) prayed? So he prayed, raising his hands only once.
Abu Dawud said: This is a summarized version of a longer narration and it is not authentic with this wording.
When the Messenger of Allah (ﷺ) began prayer, he raised his hands up to his ears, then he did not repeat.