Musnad Ahmad 1183:3

Sufyan ibn 'Uyaynah narrated to us, from Musa ibn 'Uqbah, who heard Umm Khalid, the daughter of Khalid, say—and he said: I did not hear anyone say "I heard the Messenger of Allah, may Allah bless him and grant him peace," other than her—saying: "I heard the Prophet, may Allah bless him and grant him peace, seeking refuge from the punishment of the grave."