Musnad Ahmad 32:1464

Muhammad ibn Abdullah al-Ansari narrated to us, Humayd al-Tawil narrated to us, from Anas ibn Malik, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Whoever Allah intends good for, He employs him." They said: "O Messenger of Allah, what is his employment?" He said: "He grants him success to perform a righteous deed before his death."