Musnad Abu Ya'la al-Mawsili 117:56

Hadaba narrated to us, Sulayman ibn al-Mughirah narrated to us, from Thabit, from Anas, who said: "I do not recognize anything that I used to recognize during the time of the Messenger of Allah, may Allah bless him and grant him peace, except for your saying 'La ilaha illa Allah' (There is no god but Allah)." It was said: "What about the prayer, O Abu Hamzah?" He said: "You have prayed it at the time of Maghrib. Was that the prayer of the Messenger of Allah, may Allah bless him and grant him peace? Although, I have not seen a time better for a worker than this time of yours."