Hadith 6:155
Ghundar narrated to us, from Uthman ibn Ghiyath, who said: I heard al-Hasan say: "The nails of the deceased are to be clipped, and his mustache if it has grown long." He said: I said to al-Hasan: "Are they placed with him?" He said: "Yes."
حدثنا غندر عن عثمان بن غياث قال سمعت الحسن يقول يقلم أظفار الميت وشاربه إذا طال قال قلت للحسن يوضع معه قال نعم