Narrated 'Amr bin Maimuin:
'Abdullah bin Mas'ud said, "While Allah's Apostle was praying beside the Ka'ba, there were some Quraish people sitting in a gathering. One of them said, 'Don't you see this (who does deeds...
O Allah, I ask You. O Allah, You are the One, the Only, Self-Sufficient Master, Who was not begotten and begets not and none is equal to Him. Forgive me my sins, surely you are Forgiving, Merciful.
Info: An-Nasa'i 3/52, Ahmad 4/338. See also Al-Albani, Sahih An-Nasa'i 1/280 and Sifat Salatun-Nabi, pg. 204.