Narrated Anas:
The Prophet delivered a sermon the like of which I had never heard before. He said, "If you but knew what I know then you would have laughed little and wept much." On hearing that, the companions of the...
O Allah, I hope for Your mercy. Do not leave me to myself even for the blinking of an eye (i.e. a moment). Correct all of my affairs for me. There is none worthy of worship but You.
Info: Abu Dawud 4/324, Ahmad 5/42. Al-Albani graded it as good in Sahih Abu Dawud 3/959.