Tidaklah tersembunyi dariku khusyu' dan rukuk kalian kecuali aku pasti melihat kalian dari balik punggungku

Imam Bukhari : 401

حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ قَالَ أَخْبَرَنَا مَالِكٌ عَنْ أَبِي الزِّنَادِ عَنْ الْأَعْرَجِ عَنْ أَبِي هُرَيْرَةَأَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ هَلْ تَرَوْنَ قِبْلَتِي هَا هُنَا فَوَاللَّهِ مَا يَخْفَى عَلَيَّ خُشُوعُكُمْ وَلَا رُكُوعُكُمْ إِنِّي لَأَرَاكُمْ مِنْ وَرَاءِ ظَهْرِي

Narrated to us by Abdullah bin Yusuf, Sa'd informed us Malik from Abu Az Zinad from Al A'raj from Abu Hurairah, that the Messenger of Allah, peace be upon him, Sa'd 'Do you see my qibla here? By Allah, your devotion and bowing are not hidden from me. Indeed, I can see you from behind my back.'