Hadith 6:1243
Muhammad ibn Ubayd narrated to us, he said: Yazid ibn Kaysan narrated to us, from Abu Hazim, from Abu Hurayrah, who said: The Messenger of Allah (may Allah bless him and grant him peace) passed by a grave and stood over it. He said: "Bring me two palm branches." He placed one of them at its head and the other at its feet. It was said to him: "O Messenger of Allah, does that benefit him?" He said: "Perhaps it will lighten some of the punishment of the grave for him, as long as there is moisture in them."
حدثنا محمد بن عبيد قال ثنا يزيد بن كيسان عن أبي حازم عن أبي هريرة قال مر رسول الله صلى الله عليه وسلم على قبر فوقف عليه فقال ايتوني ( ( ( ائتوني ) ) ) بجريدتين فجعل أحدهما ( ( ( إحداهما ) ) ) عند رأسه والأخرى عند رجليه فقيل له يا رسول الله أينفعه ذلك فقال لعله يخفف عنه بعض عذاب القبر ما بقيت فيه ندوة