Abu Zur'ah bin Amr bin Jarir narrates from his grandfather, Sayyiduna Jarir (may Allah be pleased with him), who said: The Messenger of Allah (peace and blessings be upon him) said to me during the Farewell Pilgrimage: "Make the people be silent." Then he said: "Do not become disbelievers after me, striking one another's necks."
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 2389