The Great Battle of Badr took place on the seventeenth of Ramadan, two years after the Hijra. This was the first battle that the believers ever engaged in with the disbelievers, and it is, by far, the most famous and most renown, becuase of the several extraordinary events that occured during it. Rasoolullah (saws) had encouraged the Muslims to oppose the Quraish caravan which was returning to Mecca from Sham.
Rasoolullah (saws) spent the whole nigh preceeding the battle in prayer and supplication even thought he (saws) knew that Allah (swt) had promised him victory. It was out of his (saws) love for and worship and submission to Allah (swt) that he did this.
Rasoolullah's good humanitarian charecters can be seen from the following directions given by him (saws).He (saws) gave strict orders that his men would not start fighting until he gave them his final word.
He recommended that they use their arrows sparingly.
and never resort to swords unless the enemies came too close.
But, the Opponent-The Quraish were haught and arrogant and confident in their superior number, weapons, and provisions but it is Allah (swt) who would decide the matter.
In the midst of all of this, Rasoolullah (saws) continued to supplicate his Lord.
Immediate was the response of Allah (swt), Who sent down angels from the heavens for the help and assistance of Rasoolullah (saw) and his companions. The Quran marks this miraculous occurance: “I will help you with a thousand of the angels each behind the other (following one another) in succession.” Quran [8:9] Rasoolullah (saws), in his hut, dozed off a little and then raised his head joyfully crying and said, “O Abu Bakr! glad tidings are there for you. Allah’s victory has approached. By Allah, I can see Jibreel on his mare in the thick of a sandstorm.” Then he came out of the hut and exclaimed: “sayuhzamul jam’u wa yuwwalloonad-dubur” Quran [54:45] (Their multitude will be put to flight, and they will show their backs.) This is in fact one of the miracles of the Quran becuase this verse was revealed in Mecca before any of these events at Badr had taken place.
The Muslims did not know that Allah’s help was about to descend upon them. They only knew the odds that were apparent to both sides: 1000 against 300, 700 camels against 70 camels, 100 horses against 2, enourmous provisions against none, an intent and preparation for war against an unprepared group of believers. Still, despite all odds, they had trust in Allah (swt) and His Messenger and they were willing and even hoping to give their lives of this dunya for the ever-lasting abode of Jannah. Because of their devotion Allah (swt) sent His help and victory.
Many of the disbelievers were killed in this battle, the most noteworthy of which was Abu Jahl, the archenemy of Islam.
The disbelievers, with all their might, turned their backs and ran away from the Muslims in disgrace and utter humiliation.
Allahu Akbar wa lillahil Hamd.