It is narrated from Abu Hazim that he said: I was present on the day Sayyiduna Hasan bin Ali (may Allah be pleased with them both) died. I saw Sayyiduna Husayn bin Ali (may Allah be pleased with them both) prodding Sa'id bin al-As in the neck and saying: "Go forward (and lead the funeral prayer); were it not the Sunnah, I would never have put you forward." And there was some ill feeling between them. Sayyiduna Abu Hurayrah (may Allah be pleased with him) said: Do you begrudge the son of your Prophet (peace and blessings be upon him) the soil (a grave site) in which you would bury him, when I heard the Messenger of Allah (peace and blessings be upon him) say: "Whoever loves them both has loved me, and whoever bears hatred toward them both has borne hatred toward me." This hadith has a sahih (authentic) chain, but the two Shaykhs (Bukhari and Muslim) did not record it.