question #2 Sahih al-Bukhari 738, Book 10, Hadith 132 : How did the Prophet (ﷺ) perform the Takbir and what was the position of his hands?

I saw Allah’s Messenger (ﷺ) opening the prayer with the Takbir and raising his hands to the level of his
shoulders at the time of saying the Takbir, and on saying the Takbir for bowing he did the same; and
when he said, “Sami`a l-lahu liman hamidah “, he did the same and then said, “Rabbana wa laka lhamd.”
But he did not do the same on prostrating and on lifting the head from it.”