Musannaf Ibn Abi Shaybah 12283 — Those who disliked standing

Muhammad (bin Sirin) said: Sayyiduna al-Hasan bin Ali (may Allah be pleased with him) and Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) saw a funeral; one of them stood up and the other remained sitting. The one who stood asked the one who had not stood: "Did the Prophet (peace and blessings be upon him) not stand?" He said: "Yes indeed, then he sat down."