Musannaf Ibn Abi Shaybah

Hazrat Umair bin Saeed narrates that Hazrat Ali (may Allah honor his face) stood by a grave until the deceased was buried, and said: One of you should stand by the grave until the dead is buried.

Hazrat Abu Qais narrates that Hazrat Alqamah stood by the grave of a deceased person until he was buried.

Hazrat Thumamah narrates that we went towards the land of Rome with Hazrat Fadala bin Ubaid; he was the overseer of the routes on behalf of Hazrat Muawiyah. When his cousin Hazrat Nafi' passed away, he led his funeral prayer and stood by his grave until he was buried and the people had dispersed.

Hazrat Abdullah bin Ubaid bin Umair narrates that Hazrat Abdullah bin Zubair used to stand by the grave of a deceased person until he was buried.