Sahih Muslim 1078 b
This hadith has been narrated by Shu'ba with the same chain of transmitters (but with a slight variation of words, that he said):
(O Allah), bless them."
وَحَدَّثَنَاهُ ابْنُ نُمَيْرٍ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ إِدْرِيسَ، عَنْ شُعْبَةَ، بِهَذَا الإِسْنَادِ غَيْرَ أَنَّهُ قَالَ ‏
"‏ صَلِّ عَلَيْهِمْ ‏"‏ ‏.‏