Sayyiduna Abu Umamah (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "Indeed, Allah Almighty says: O son of Adam, offer four rak'ahs for My sake in the early part of the day, and I will suffice you until the last part of it (the day)."
Al-Tabarani recorded it in al-Mu'jam al-Kabir; its chain contains Salman bin Salamah al-Khaba'iri, and he is matruk (abandoned).