Abu Hazim (may Allah have mercy on him) said: I walked in front of the funeral with Abu Hurayrah (may Allah be pleased with him), Ibn Umar (may Allah be pleased with them both), Ibn al-Zubayr (may Allah be pleased with him) and al-Hasan bin Ali (may Allah be pleased with him), until we reached the graveyard. They remained standing until it was set down, then they sat. I spoke to one of them about it, and he said: "The one who stands is like the one who carries."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجنائز / 6883