سنن أبي داود

Narrated Anas ibn Malik:

A woman came to the Messenger of Allah (ﷺ) and said: Messenger of Allah: I have some need with you. He said to her: Mother of so and so, sit in the corner of any street you wish and I shall sit with you. So she sat and the Messenger of Allah (ﷺ) also sat with her till she fulfilled her need.

The narrator Ibn 'Isa did not mention "till she fulfilled her need." And Kathir said: from Humaid on the authority of Anas.