What did the Prophet Muhammad (saw) warn his followers about when he addressed them during Hajjat-al-Wada`?
 Narrated Jarir:                     The Prophet said to me during Hajjat-al-Wada`, "Let the people keep quiet and listen." Then he said (addressing the people), "Beware! Do not renegade as disbelievers after me by striking (cutting) the necks of one another."