question #3 Sahih Muslim 709a, Book 6, Hadith 73 : Why did the companions prefer to stand on the right side of the Prophet during prayer?

When we prayed behind the Messenger of Allah (ﷺ) we cherished to be on his right side so that his face would turn towards us (at the end of the prayer), and he (the narrator) said: I heard him say: O my Lord! save me from Thy torment on the Day when Thoil, wouldst raise or gather Thy servants.