question #3 Sahih al-Bukhari 6414, Book 81, Hadith 3 : What role did the companions play during the battle of Al-Khandaq according to this narration?

We were in the company of Allah’s Messenger (ﷺ) in (the battle of) Al-Khandaq, and he was digging the
trench while we were carrying the earth away. He looked at us and said, “O Allah! There is no life
worth living except the life of the Hereafter, so (please) forgive the Ansar and the Emigrants.”