Musnad Ahmad 199:2

Muhammad ibn Ja'far narrated to us, Shu'bah narrated to us, from 'Abd al-Malik ibn 'Umayr, who said: I heard Shabib Abu Rawh narrating from a man among the companions of the Prophet, may Allah bless him and grant him peace, that the Prophet, may Allah bless him and grant him peace, prayed the morning prayer and recited Surah ar-Rum in it, but he became confused. He mentioned it.