حَدَّثَنَا عُثْمَانُ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا جَرِيرٌ، عَنْ رَقَبَةَ، أَنَّ أَبَا جَعْفَرٍ الْهَاشِمِيَّ الْمَدَنِيَّ كَانَ يَضَعُ أَحَادِيثَ كَلَامَ حَقٍّ، وَلَيْسَتْ مِنْ أَحَادِيثِ النَّبِيِّ ﷺ، وَكَانَ يَرْوِيهَا عَنِ النَّبِيِّ ﷺ.
Translation: Through ʿUthmān b. Abī Shaybah, Jarīr and Raqabah it is reported that Abū Jaʿfar al-Hāshimī al-Madanī would compose sayings whose content was true, though they were not Prophetic reports, and then attribute them to the Prophet ﷺ.
«Kalām ḥaqq» indicates that a statement may express truth in its content; it does not establish that the Prophet said it. Authenticity of attribution is independent of whether a sentence is morally commendable or factually sound.