Hadithcore
Sunan Abi Dawud, 651
sahih· Al-Albani

This tradition has also been transmitted through a chain by Bakr b. ‘Abd Allah. This version has the word Khubuth (filth) and in two places the word Khubuthan (filth).

حَدَّثَنَا مُوسَى، - يَعْنِي ابْنَ إِسْمَاعِيلَ - حَدَّثَنَا أَبَانُ، حَدَّثَنَا قَتَادَةُ، حَدَّثَنِي بَكْرُ بْنُ عَبْدِ اللَّهِ، عَنِ النَّبِيِّ صلى الله عليه وسلم بِهَذَا قَالَ ‏"‏ فِيهِمَا خَبَثًا ‏"‏ ‏.‏ قَالَ فِي الْمَوْضِعَيْنِ ‏"‏ خَبَثًا ‏"‏ ‏.‏

References2 variants
In-Book Reference
Book 2, Hadith 261
English Reference
Book 2, Hadith 651