Hadith 6:867
Hafs narrated to us, from ‘Asim, who said: I witnessed the funeral of a man in which Al-Hasan and Ibn Sirin were present. A garment was spread over his grave. Al-Hasan said: "Uncover it, for he is only a man." Ibn Sirin did not see any harm in it.
حدثنا حفص عن عاصم قال شهدت جنازة رجل فيها الحسن وبن سيرين فمد على قبره ثوب فقال الحسن اكشفوه فإنما هو رجل ولم ير بن سيرين به بأسا