I came across the following hadith online and was hoping someone could include the arabic version that I believe is found in Musnad Ahmad. The entire Musnad Ahmad hasn't been translated in English online yet for us to view (though I know it is available in book format). JazakAllah khair for the help.
Ahmad (9504) narrated that Abu Hurayrah (may Allah be pleased with him) said: The Messenger of Allah (blessings and peace of Allah be upon him) led us in praying Zuhr, and in the last row there was a man who prayed badly. When he said the salaam, the Messenger of Allah (blessings and peace of Allah be upon him) called him and said: “O So and so, do you not fear Allah? Do you not see how you pray. You think that you could hide from me some of what you do, but by Allah I can see behind me as well as I can see in front of me.”