Sunan Abi Dawud Book 2, Hadith 448
I saw that the Prophet (ﷺ) placed his knees (on the ground) before placing his hands when he prostrated himself. And when he stood up, he raised his hands before his knees.
This means that when he raised his head after bowing and when he was about to prostrate, he did not utter the takbir, and when he stood up after prostration, he did not utter the takbir.
When he prostrated himself, his knees fell on the ground before his hands had fallen. Hemmam said: This tradition has also been transmitted by ‘Asim b. Kulaib through a different chain of narrators to the same effect. And one of these two versions, and probably the version narrated by Muhammad b. Juhadah, has the words: When he stood up (after prostration), he stood up on his knees taking the support of his thighs.