Sunan Ibn Majah, Chapter: Chapters Regarding Funerals

"There was a black woman who used to sweep the mosque, and she passed away at night. The following morning the Messenger of Allah (saw) was told of her death. He said: 'Why did you not call me?' Then he went out with his Companions and stood at her grave, and said Takbir over her, with the people behind him, and he supplicated for her, then he went away.'" Sahih