The Book of Prayers
4/24. Chapter:
The Command To Perform The Prayer Properly, To Complete It, And To Have Khushu' In It
Sahih Muslim
حَدَّثَنِي مُحَمَّدُ بْنُ الْمُثَنَّى، وَابْنُ، بَشَّارٍ قَالاَ حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ، حَدَّثَنَا شُعْبَةُ، قَالَ سَمِعْتُ قَتَادَةَ، يُحَدِّثُ عَنْ أَنَسِ بْنِ مَالِكٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " أَقِيمُوا الرُّكُوعَ وَالسُّجُودَ فَوَاللَّهِ إِنِّي لأَرَاكُمْ مِنْ بَعْدِي - وَرُبَّمَا قَالَ مِنْ بَعْدِ ظَهْرِي - إِذَا رَكَعْتُمْ وَسَجَدْتُمْ " .
Anas b. Malik reported. The Messenger of Allah (ﷺ) said: Perform bowing and prostration well. By Allah, I see you even if you are behind me, or he said: (I see you) behind my back when you bow or prostrate.
Reference : Sahih Muslim 425aIn-book reference : Book 4, Hadith 121USC-MSA web (English) reference : Book 4, Hadith 855