'Amr bin Al-'as (May Allah be pleased with him) used to say:
"When you have buried me, keep standing near my grave till (for the time it takes to) a camel is slaughtered and its meat is distributed, so that I may feel your nearness and know what to reply to the angels sent by my Rubb."[Muslim].
App reference: Book 7, Hadith 53
Arabic/English book reference: Book 7, Hadith 947