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."
Hadith ReferenceSahih Bukhari / The Book of As-Salat (The Prayer) / Hadith: 418
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة