Sahih al-Bukhari 6430Book 81, Hadith 19
حَدَّثَنِي يَحْيَى بْنُ مُوسَى، حَدَّثَنَا وَكِيعٌ، حَدَّثَنَا إِسْمَاعِيلُ، عَنْ قَيْسٍ، قَالَ سَمِعْتُ خَبَّابًا، وَقَدِ اكْتَوَى يَوْمَئِذٍ سَبْعًا فِي بَطْنِهِ وَقَالَ لَوْلاَ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم نَهَانَا أَنْ نَدْعُوَ بِالْمَوْتِ لَدَعَوْتُ بِالْمَوْتِ، إِنَّ أَصْحَابَ مُحَمَّدٍ صلى الله عليه وسلم مَضَوْا وَلَمْ تَنْقُصْهُمُ الدُّنْيَا بِشَىْءٍ، وَإِنَّا أَصَبْنَا مِنَ الدُّنْيَا مَا لاَ نَجِدُ لَهُ مَوْضِعًا إِلاَّ التُّرَابَ.
I heard Khabbab, who had branded his `Abdomen with seven brands, saying, "Had Allah's Messenger (ﷺ) not forbidden us to invoke Allah for death, I would have invoked Allah for death. The companions of Muhammad have left this world without taking anything of their reward in it (i.e., they will have perfect reward in the Hereafter), but we have collected of the worldly wealth what we cannot spend but on earth (i.e. on building houses).