Musnad Ahmad 334:7

'Abd al-Rahman ibn Mahdi narrated to us, from Zuhayr, and Yahya ibn Abi Bukayr narrated to us, he said: Zuhayr ibn Muhammad narrated to us, from Yazid ibn Khusayfah, from Salamah ibn al-Akwa' who said: "I used to travel with the Messenger of Allah, may Allah bless him and grant him peace, and I never saw him pray after the 'Asr (afternoon) prayer, nor after the Subh (dawn) prayer at all."