The Prophet (blessings and peace of Allah be upon him) used to advise his ummah and guide them to that which was in their best interests, and he would forbid them to do that which would harm them in their religious and worldly affairs, in this world and the hereafter. In this hadith, Jarir ibn ‘Abdillah al-Bajali (may Allah be pleased with him) narrated that the Prophet (blessings and peace of Allah be upon him) instructed him, during the Farewell Pilgrimage, to tell the people to be quiet and pay heed to the Prophet (blessings and peace of Allah be upon him), and to listen attentively to what he was going to say to them. When they fell silent, the Prophet (blessings and peace of Allah be upon him) addressed them and warned them not to go back to being disbelievers after he was gone, striking one another’s necks. That would be the case if they let enmity and hatred amongst themselves prompt them to regard it as permissible to shed one another’s blood. It was said: it may be that the Prophet (blessings and peace of Allah be upon him) knew that this would not happen during his lifetime, so he forbade them to do that after he died. In other words, he was saying: when I depart this world, remain steadfast after I am gone in the faith and piety that you are currently adhering to; do not wage war against the Muslims, and do not take their wealth unlawfully. It was also said that what was meant was: Do not let your actions be like the actions of the disbelievers by striking the necks of the Muslims. This hadith indicates that a person should listen attentively to his companion, so long as he is not speaking of anything haram. This hadith is also one of the signs of the prophethood of the Prophet (blessings and peace of Allah be upon him). It also indicates that it is emphatically forbidden for the Muslims to fight one another and shed one another’s blood..