Abu Sa’id al-Khudri reported: The Prophet, peace and blessings be upon him, said, “Our Lord will reveal His shin and every believing man and woman will prostrate to Him, but there will remain those who prostrated in the world for ostentation and respectability. They will try to prostrate, but their back will be as stiff as a single bone.”
Source: Ṣaḥīḥ al-Bukhārī 4919
Grade: Sahih (authentic) according to Al-Bukhari
عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ أَنَّ النَّبِيَّ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ يَكْشِفُ رَبُّنَا عَنْ سَاقِهِ فَيَسْجُدُ لَهُ كُلُّ مُؤْمِنٍ وَمُؤْمِنَةٍ وَيَبْقَى مَنْ كَانَ يَسْجُدُ فِي الدُّنْيَا رِئَاءً وَسُمْعَةً فَيَذْهَبُ لِيَسْجُدَ فَيَعُودُ ظَهْرُهُ طَبَقًا وَاحِدًا
4919 صحيح البخاري سورة ن والقلم باب يوم يكشف عن ساق