Sayyiduna Abdullah bin Amr (may Allah be pleased with him) narrates: Some of his Companions were with the Prophet (peace and blessings be upon him), and I was with them, the youngest of them. The Prophet (peace and blessings be upon him) said: "Whoever deliberately attributes a lie to me should prepare to reach his designated abode in Hell." When the people left, I said: "How do you narrate hadith on the authority of the Prophet (peace and blessings be upon him) when you have heard what the Prophet (peace and blessings be upon him) said (about the consequence of attributing anything false to the Prophet (peace and blessings be upon him)), and yet you are engrossed in narrating hadith on the authority of the Prophet (peace and blessings be upon him)?" They laughed and said: "O our nephew! Everything we have heard from the Prophet (peace and blessings be upon him) is with us in writing."
Tabarani recorded it in al-Mu'jam al-Kabir; the chain of this narration contains a narrator, Ishaq bin Yahya bin Talhah, who is matruk al-hadith (abandoned in hadith).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب العلم / 678