Musnad Ahmad 947:17

Abu Sa’id, the freed slave of Banu Hashim, narrated to us, Zaidah narrated to us, ‘Abdullah ibn ‘Uthman ibn Khuthaym narrated to us, Nafi’ ibn Sarjas narrated to us, that he entered upon Abu Waqid al-Laythi, a companion of the Prophet, may Allah bless him and grant him peace, during the illness in which he died. He said: "The Messenger of Allah, may Allah bless him and grant him peace, was the lightest of people in prayer for the people, and the most constant of them in it for himself."