Musnad Ahmad 3711

Abu Majid, a man of Banu Haneefah, narrated that ‘Abdullah bin Mas'ood (رضي الله عنه) said: We asked our Prophet (ﷺ) about walking with the bier and he said: "A rapid walk, for if he (the deceased) was good, it is good to which you are hastening him, and if he were otherwise, then away with the people of Hell. The bier should be followed rather than follow; he is not one of us who walks ahead of it.”