Hashemite–Umayyad rivalry demoralized, and ended in a Muslim victory. From that day onwards, it is said that the rivalry between the two clans developed into a severe case of tribal animosity. Muhammad had ordered that those Hashimites who were fighting in the side of the Meccans at Badr, including his uncle Abbas ibn Abdul-Muttalib were not to be killed. Reacting to this, Abu Hudhayfa ibn 'Utba, a Muslim belonging to Banu Umayya, and a son and brother respectively of the Meccan warriors killed in the duels, remarked: "Shall we kill our fathers, brothers and children, and leave al-Abbas? By Allah! If I
Battle of the Trench many alliances against the Muslim expansion. Nevertheless, he was unable to prevent the Meccan one. As they had in the battles of Badr and Uhud, the Muslim army again used strategic methods against their opponents (at Badr, the Muslims surrounded the wells, but did not deprive their opponents of water since Ali did not want to follow the footsteps of the Meccan army; at the Battle of Uhud, Muslims made strategic use of the hills). In this battle they dug a trench to render the enemy cavalry ineffective. The reason for this battle was to defend Medina from attack, after