Sahih Muslim 2891 c
This hadith has been narrated on the authority of A'mash with the same chain of transmitters up to the words:
And he forgot who had to forget that and. he did not make a mention of what follows after this.
وَحَدَّثَنَاهُ أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا وَكِيعٌ، عَنْ سُفْيَانَ، عَنِ الأَعْمَشِ، بِهَذَا الإِسْنَادِ
 إِلَى قَوْلِهِ وَنَسِيَهُ مَنْ نَسِيَهُ ‏.‏ وَلَمْ يَذْكُرْ مَا بَعْدَهُ ‏.‏