I heard ʿAli ؓ say: The Messenger of Allah ﷺ said: “Do not tell lies about me, because whoever tells a lie about me will enter Hell.” Hajjaj said: I said to Shuʿbah: Did he meet ʿAli? He said. Yes; he narrated it to me from ‘Ali. And he did not say he heard it. It was narrated from Rib’i bin Hirash that he heard ʿAli ؓ deliver a khutbah; he said: The Messenger of Allah ﷺ said... and he narrated a similar report.
قَالَ رَسُولُ اللهِ ﷺ لَا تَكْذِبُوا عَلَيَّ فَإِنَّهُ مَنْ يَكْذِبْ عَلَيَّ يَلِجِ النَّارَ قَالَ حَجَّاجٌ قُلْتُ لِشُعْبَةَ هَلْ أَدْرَكَ عَلِيًّا؟ قَالَ نَعَمْ حَدَّثَنِي عَنْ عَلِيٍّ وَلَمْ يَقُلْ سَمِعَ