The Prophet ﷺ said: The trumpet (sur) which will be blown.  

عَنِ النَّبِيِّ ﷺ قَالَ الصُّورُ قَرْنٌ يُنْفَخُ فِيهِ  

Every son of Adam will be devoured by the earth with the exception of the tail-bone from which he was created and from which he will be reconstituted.  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ كُلَّ ابْنِ آدَمَ تَأْكُلُ الأَرْضُ إِلاَّ عَجْبَ الذَّنَبِ مِنْهُ خُلِقَ وَفِيهِ يُرَكَّبُ