The Messenger of Allah ﷺ said, "Allah says, 'Son of Adam, devote yourself to four units of prayer for Me at the start of the day, and I will suffice you for the rest of it.'"
حدثنا يزيد بن هارون حدثنا أبان بن يزيد العطار عن قتادة عن نعيم بن همار
أن رسول الله ﷺ قال إن الله عز وجل يقول يا ابن آدم اكفني أول النهار بأربع ركعات أكفك بهن آخر يومك
Its chain of transmission is sahih, and Naeem bin Hammar is a companion, also said to be Ibn Khammar, or Habbar, or Haddar. Tirmidhi related the hadith, 2/340, no. 475, in the Book of Prayer, chapter on what has been said about the Duha prayer, and he said, hasan gharib. Munziri mentioned it in Targheeb, 1/464, attributing it to Ahmad, and said, its narrators are the narrators of the Sahih.