Musnad Abu Ya'la al-Mawsili 117:244

Zuhayr narrated to us, Affan narrated to us, Hammad narrated to us, from Thabit, from Anas: That a woman had something in her intellect, so she said, "O Messenger of Allah, I have a need." He said, "O mother of so-and-so, look at whichever path you wish." He stood with her, speaking privately to her, until she had fulfilled her need.