English Translation
Narrated Abu Zur'a bin 'Amr bin Jarir: The Prophet said during Hajjat-al-Wada', "Let the people be quiet and listen to me. After me, do not become disbelievers, by striking (cutting) the necks of one another."
This hadith is from Sahih al-Bukhari, the most rigorously authenticated collection in Islamic scholarship. No editorial opinion is added.