"I remember when we were with the Messnger of Allah, and we were walking fast with it (the Janazah)." This is the wording of Hushaim.
Sunan an-Nasa'i Book 21, Hadith 96
← Previous Hadith "My father told me: I witnessed the funeral of 'Abdur-Rahamn bin Samurah. Ziyad came out, walking in front of the bier, and some men from the family of 'Abdur-Rahman and their freed slaves came out, facing the bier and walking backward, saying: 'Slow down, slow down, may Allah bless you.' And they were walking slowly. Then when they were partway to Al-Mrbad, Abu Bakrah joined us on his mule. When he saw what they were doing, he rushed to them on his mule, brandishing his whip, and said: 'Move on, for by the One Who honored the face of Abu Al-Qasim, I remember when we were with the Messenger of Allah, we were walking fast, so the people speeded up."'

Sunan an-Nasa'i Book 21, Hadith 95 Next Hadith → "When a funeral passes by you, stand up, and whoever follows it, let him not sit down until it is put down (in the grave)."

Sunan an-Nasa'i Book 21, Hadith 97