Musannaf Ibn Abi Shayba 21:480

Yazid ibn Harun narrated to us, he said: Ali ibn Mas'adah informed us, from Abdullah al-Rumi, who said: We were with Anas ibn Malik, and a man said to him: "O Abu Hamzah, your brothers would like for you to supplicate for them." He said: "O Allah, forgive us, have mercy upon us, give us good in this world and good in the Hereafter, and protect us from the punishment of the Fire." They said: "Increase us, O Abu Hamzah." So he repeated it to them. They said: "Increase us, O Abu Hamzah." He said: "Sufficient for us is Allah, O Abu Fulān. If we are given that, then we have been given the good of this world and the Hereafter."