The son of Abd al-Rahman narrates from his father, who said: I was at the funeral of Abd al-Rahman bin Samurah (may Allah be pleased with him), when Ziyad and some men from among his freed slaves began walking backwards in front of the bier, saying: "Slowly, slowly, may Allah bless you." He said: Abu Bakrah (may Allah be pleased with him) caught up with them in one of the lanes of al-Mirbad; he drove his mule at them, lashed at them with his whip and said: "Make way! By the One who honoured the face of Abu al-Qasim (peace and blessings be upon him), we used to see ourselves in the time of the Messenger of Allah (peace and blessings be upon him) almost running with it (the funeral)."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجنائز / 6847