Sahih Muslim 2774 b
This hadith has been narrated on the authority of 'Abdullah with the same chain of transmitters but with this addition:
" He then abandoned offering (funeral) prayer for them."
حَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، وَعُبَيْدُ اللَّهِ بْنُ سَعِيدٍ، قَالاَ حَدَّثَنَا يَحْيَى، - وَهُوَ الْقَطَّانُ
 - عَنْ عُبَيْدِ اللَّهِ، بِهَذَا الإِسْنَادِ نَحْوَهُ وَزَادَ قَالَ فَتَرَكَ الصَّلاَةَ عَلَيْهِمْ ‏.‏