Musnad Abu Ya'la al-Mawsili 153:35

Abu ‘Amir Hawtharah ibn Ashras narrated to us, ‘Uqbah ibn Abi al-Sahba’ Abu Khuraym al-Bahili narrated to us, from Salim, from his father, that the Messenger of Allah (may Allah bless him and grant him peace) prayed the morning prayer, then faced the rising of the sun and said: "Verily, the tribulations are from here," three times, "and from there rises the horn of Satan."