Narrated Abu Huraira: Allah's Apostle said, "Do you consider or see that my face is towards the Qibla? By Allah, neither your submissiveness nor your bowing is hidden from me, surely I see you from my back."
— Sahih Bukhari, Volume 1, Book 8: Prayers (Salat), Hadith #410
Narrated Abu Huraira: Allah's Apostle said, "Do you consider or see that my face is towards the Qibla? By Allah, neither your submissiveness nor your bowing is hidden from me, surely I see you from my back."
This hadith is from the book of Prayers (Salat) in Sahih Bukhari, compiled by Imam al-Bukhari. It is hadith number 410 in book 8 of volume 1.
This hadith is referenced in the following topics: How to Pray.