Sayyiduna Sa'id bin Zayd bin Amr bin Nufayl (may Allah be pleased with him) said: "You are telling me to revile my companions? Rather, may Allah Almighty send His mercy upon them and forgive them."
Al-Tabarani recorded it in al-Mu'jam al-Awsat, and its narrators are the narrators of the Sahih.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 16427