‎Al-Barā رضي الله عنه narrated:

We were with the Messenger of Allāh ﷺ at a funeral and he sat by the edge of the grave. He cried until the ground become wet then he said:

‎”O my brothers, prepare (yourselves) for the likes of this.”

“[As-Silsilah As-Sahīhah #1751]