"The Messenger of Allah said: 'The Messenger of Allah said: 'The whole of the son of Adam will be consumed by the earth, except for the tailbone, from which he was created and from which he will be created anwe."' (Using translation from Nasāʾī 2077)
قَالَ رَسُولُ اللهِ ﷺ «كُلُّ بَنِي آدَمَ» وَفِي حَدِيثِ مُغِيرَةَ «كُلُّ ابْنِ آدَمَ يَأْكُلُهُ يَعْنِي التُّرَابَ إِلَّا عَجْبَ الذَّنَبِ مِنْهُ خُلِقَ وَفِيهِ يُرَكَّبُ»