﴿ يَوْمَ يُكْشَفُ عَن سَاقٍۢ وَيُدْعَوْنَ إِلَى ٱلسُّجُودِ فَلَا يَسْتَطِيعُونَ ﴾

“on the Day when man's very being shall be bared to the bone, and when they [who now deny the truth] shall be called upon to prostrate themselves [before God], and shall be unable to do so:”

Please check ayah 68:47 for complete tafsir.