Ya'la bin 'Ata' يعلى بن عطاء العامري · The Book of Forgetfulness (In Prayer)

"I watched the Messenger of Allah (ﷺ) when he prayed, and I noticed that his standing, his bowing, his standing up after bowing, his prostration, his sitting between the two prostrations and his sitting between the taslim and departing were almost the same in length."