Ja'far bin Muhammad narrates from his father that he said: The Messenger of Allah (peace be upon him) threw three handfuls of soil on the deceased with both his hands.
Hadith Referenceمسند الإمام الشافعي / كتاب الجنائز / 601
Hadith Takhrijاسناده ضعيف جدا، لضعف شيخ الشافعى ولإرساله اخرجه البيهقي في المعرفة السنن والآثار (2180)۔