However, “Indeed, Allah fulfilled His promise to you when you initially swept them away by His Will, then your courage weakened and you disputed about the command and disobeyed, after Allah had brought victory within your reach. Some of you were after worldly gain while others desired a heavenly reward. He denied you victory over them as a test, yet He has pardoned you. And Allah is Gracious to the believers.” (2)
The archers who were appointed on the left flank disputed whether to keep their positions after the initial victory. Eventually, most of them decided to go in pursuit of the spoils of the battle, disobeying the Prophet’s direct orders not to leave their positions no matter what happened. Rumors circulated that Prophet Muhammad (p.b.u.h & his family) had died. The Muslims army became jumbled as a result; they dispersed all over the place. Defeat became inevitable.
The Prophet (p.b.u.h & his family) was left alone with only Imam Ali (a.s) to defend him – which was more than enough -, as Muslims fled for their own safety. The Prophet (p.b.u.h & his family) was hit on his forehead and teeth with stones. (3)
All these bitter moments, yet, there was a loss that caused great pain to Ahl Al-Bayt (a.s) during this battle; the martyrdom of Hamza (a.s). Not only was he killed, but his liver was eaten and violently cut up by Abu Sufyan's wife Hind.
This loss was not a loss that destroyed the Islamic religion, but rather - with all its bitterness - became a stepping stone and a lesson learned for the Muslims. This is from the aid of Allah (s.w.t) and the blessings of the leadership of the Prophet (p.b.u.h & his family).
(1) Al-Maghāzī, vol. 1, p. 225-229; Al-Ṭabaqāt Al-kubrā, vol. 2, p. 40-41; Al Kamil, vol 3 p 107.
(2) Al-Quran, 3:152.
(3) Al-Sīyar wa l-maghāzī, p. 230; Al-Sīra al-Nabawīyya, vol. 2, p. 83; Tārīkh Al-Ṭabarī, vol. 2, p. 518.