Narrated Abu Huraira: Allah's Apostle said, "You see me facing the Qibla; but, by Allah, nothing is hidden from me regarding your bowing and submissiveness and I see you from behind my back."
Hadith Referenceصحيح البخاري / كتاب الأذان (صفة الصلوة) / 741
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة
Narrated Anas bin Malik: The Prophet said, "Perform the bowing and the prostrations properly. By Allah, I see you from behind me (or from behind my back) when you bow or prostrate."
Hadith Referenceصحيح البخاري / كتاب الأذان (صفة الصلوة) / 742
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة