Musnad Ahmad 944:15

'Affan narrated to us, Hammad ibn Salamah narrated to us, Abu Ja'far al-Khatmi informed us, from 'Umarah ibn Khuzaymah ibn Thabit, that his father said: I saw in a dream as if I were prostrating upon the forehead of the Prophet, may Allah bless him and grant him peace. I informed the Messenger of Allah, may Allah bless him and grant him peace, of that, and he said: "Indeed, the soul meets the soul." And the Prophet, may Allah bless him and grant him peace, tilted his head like this, and he placed his forehead upon the forehead of the Prophet, may Allah bless him and grant him peace.