Sunan an Nasai 1910
The Book of Funerals
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنِ الزُّهْرِيِّ، عَنْ سَعِيدٍ، عَنْ أَبِي هُرَيْرَةَ، يَبْلُغُ بِهِ النَّبِيَّ صلى الله عليه وسلم قَالَ " أَسْرِعُوا بِالْجَنَازَةِ فَإِنْ تَكُ صَالِحَةً فَخَيْرٌ تُقَدِّمُونَهَا إِلَيْهِ وَإِنْ تَكُ غَيْرَ ذَلِكَ فَشَرٌّ تَضَعُونَهُ عَنْ رِقَابِكُمْ " .
It was narrated from Abu Hurairah, who attributed it to the Prophet:"Hasten with the Janazah, for if it was righteous then your are taking it toward something good, and if it was otherwise, then it is an evil of which you are relieving yourselves
Grading: Abu Ghuddah: Sahih · Al-Albani: Sahih · Zubair Ali Zai: Sahih - Agreed Upon
Text from the public-domain hadith-api dataset. Numbering follows that dataset and can differ by a few from some printed editions — check the wording, not only the number.