Mishkat al-Masabih 868
Bowing - Section 1
عَنْ أَنَسٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «أَقِيمُوا الرُّكُوعَ وَالسُّجُودَ فَوَاللَّهِ إِنِّي لأَرَاكُمْ من بعدِي»
Translation
Anas reported God’s Messenger as saying, “Perform the bowing and the prostration properly, for I swear by God that I can see you behind me." (Bukhari and Muslim.)
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