Sahih Bukhari Volume 4, Book 60, Hadith 3453

فَقَالَ وَسَمِعْتُهُ يَقُولُ ‏"‏ إِنَّ رَجُلاً حَضَرَهُ الْمَوْتُ، فَلَمَّا يَئِسَ مِنَ الْحَيَاةِ أَوْصَى أَهْلَهُ إِذَا أَنَا مُتُّ فَاجْمَعُوا لِي حَطَبًا كَثِيرًا وَأَوْقِدُوا فِيهِ نَارًا حَتَّى إِذَا أَكَلَتْ لَحْمِي، وَخَلَصَتْ إِلَى عَظْمِي، فَامْتَحَشْتُ، فَخُذُوهَا فَاطْحَنُوهَا، ثُمَّ انْظُرُوا يَوْمًا رَاحًا فَاذْرُوهُ فِي الْيَمِّ‏.‏ فَفَعَلُوا، فَجَمَعَهُ فَقَالَ لَهُ لِمَ فَعَلْتَ ذَلِكَ قَالَ مِنْ خَشْيَتِكَ‏.‏ فَغَفَرَ اللَّهُ لَهُ ‏"‏‏.‏ قَالَ عُقْبَةُ بْنُ عَمْرٍو، وَأَنَا سَمِعْتُهُ يَقُولُ ذَاكَ، وَكَانَ نَبَّاشًا‏.‏

Hudhaifa further said, "I also heard him saying, 'Once there was a man on his death-bed, who, losing every hope of surviving said to his family: When I die, gather for me a large heap of wood and make a fire (to burn me). When the fire eats my meat and reaches my bones, and when the bones burn, take and crush them into powder and wait for a windy day to throw it (i.e. the powder) over the sea. They did so, but Allah collected his particles and asked him: Why did you do so? He replied: For fear of You. So Allah forgave him." 'Uqba bin 'Amr said, "I heard him saying that the Israeli used to dig the grave of the dead (to steal their shrouds)."