Nafi' bin Jubayr bin Mut'im نافع بن جبير بن مطعم · Funerals (Kitab Al-Jana'iz)

We were with the Prophet (ﷺ) when a funeral passed hi and he stood up for it. When we went to carry it, we found that it was a funeral of a Jew. We, therefore said: Messenger of Allah, this is the funeral of a Jew. He said: Death is fearful event, so when you see a funeral, stand up.