Humayd narrates: We were with Sayyiduna Anas bin Malik (may Allah be pleased with him), and he said: "By Allah! Not everything that we (that is, the Companions) narrate to you on the authority of the Prophet (peace and blessings be upon him) did we hear (directly) from the Prophet (peace and blessings be upon him), but none of us would lie to another."
Tabarani recorded it in al-Mu'jam al-Kabir, and its narrators are the narrators of the Sahih.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب العلم / 690