أَخْبَرَنَا عَمْرُو بْنُ عُثْمَانَ، قَالَ حَدَّثَنَا بَقِيَّةُ، قَالَ حَدَّثَنَا الزُّبَيْدِيُّ، قَالَ حَدَّثَنِي الزُّهْرِيُّ، عَنْ أَبِي عُبَيْدٍ، مَوْلَى عَبْدِ الرَّحْمَنِ بْنِ عَوْفٍ أَنَّهُ سَمِعَ أَبَا هُرَيْرَةَ، يَقُولُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ لاَ يَتَمَنَّيَنَّ أَحَدُكُمُ الْمَوْتَ إِمَّا مُحْسِنًا فَلَعَلَّهُ أَنْ يَعِيشَ يَزْدَادُ خَيْرًا وَهُوَ خَيْرٌ لَهُ وَإِمَّا مُسِيئًا فَلَعَلَّهُ أَنْ يَسْتَعْتِبَ ‏"‏ ‏.‏

It was narrated from Abu Ubaid the freed slave of 'Abdur-Rahman bin Awf that he heard Abu Huraidah say: 'None of you should wish for death. Either he is a doer of good, so if he lives he will do more good or he is a doer of evil but perhaps he will give up his evil ways."' Translation Not Available

Book reference: Sunan An Nisai Book 21 Hadith 1819
Web reference: Sunan An Nisai Volume 3 Book 21 Hadith 1820