We said to Zaid bin Arqam: 'Tell us a Hadith from the Messenger of Allah ﷺ.' He said: 'We have grown old and have forgotten, and (narrating) Ahadith from the Messenger of Allah ﷺ is difficult (not a simple matter).'" (Using translation from Ibn Mājah 25)
حَدِّثْنَا قَالَ كَبُرْنَا وَنَسِينَا وَالْحَدِيثُ عَلَى رَسُولِ اللهِ ﷺ شَدِيدٌ