Musnad Ahmad 577:0

Narrated to us by Muhammad ibn Ja’far, who said: Narrated to us Shu’bah, from Qatadah, who said: I heard Zurarah ibn Awfa narrating from Sa’d ibn Hisham, from Nu’aym ibn al-Nahham, that the Prophet (ﷺ) said: "O son of Adam, do not be incapable of performing four rak'ahs for Me at the beginning of your day, and I will suffice you for the rest of it."