It is narrated from Sayyiduna Abu Dharr (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said to me: "Graves remind their visitors of the Hereafter. Wash the dead, for tending to a lifeless body is a most effective admonition. And offer the funeral prayers, perhaps that will make you sorrowful (concerned), for the sorrowful one will be in the shade of Allah on the Day of Resurrection." This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.