It is narrated from Sayyiduna Abu Musa (may Allah be pleased with him) that a funeral passed by the Prophet (peace and blessings be upon him), and people were shaking it (because of their speed) the way a waterskin is shaken, so the Messenger of Allah (peace and blessings be upon him) said: "Keep to moderation in walking with your funerals."
Sayyiduna Abu Musa (may Allah be pleased with him) left instructions: When you set out with my funeral, walk quickly. This indicates that what is meant by this report, if it is established, is that walking with excessive speed is disliked.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجنائز / 6851