Ubaidullah bin 'Umar bin Hafs عبيد الله بن عمر بن حفص بن عاصم · The Book of Forgetfulness (In Prayer)

"Ali bin Abi Talib prayed, and he said the takbir every time he went down and came up, in all movements of the prayer. 'Imran bin Husain said: 'This reminds me of the prayer of the Messenger of Allah (ﷺ).'"

When the Prophet (ﷺ) stood up following two prostrations, he would say the takbir and raise his hands until they were level with his shoulders, as he had done at the beginning of the prayer.

"Ibn Umar saw me playing with the pebbles while praying. When he finished (praying), he told me not to do that and said: 'Do what the Messenger of Allah (ﷺ) used to do.' I said: 'What did he used to do?' He said: 'When he sat during the prayer, he placed his right hand on his thigh and clenched all his fingers, and pointed with the finger that is next to the thumb, and he put his left hand on…