Musannaf Ibn Abi Shayba 3:6329

Waki’ narrated to us, from Sufyan, from Abdullah bin Muhammad bin Aqil, from al-Tufayl bin Ubayy, from his father, who said: A man said to the Prophet, may Allah bless him and grant him peace: "What do you think if I make all of my prayer [supplication] for you?" He said: "Then Allah will suffice you for what concerns you of the affairs of your worldly life and your Hereafter."