process was much more heinous and far more serious than the act of the Muslims:
"They ask you concerning fighting in the sacred months (i.e. 1st, 7th, 11th and 12th months of the Islamic calendar). Say, ‘Fighting therein is a great (transgression) but a greater (transgression) with Allâh is to prevent mankind from following the way of Allâh, to disbelieve in Him, to prevent access to Al-Masjid-Al-Harâm (at Makkah), and to drive out its inhabitants, and Al-Fitnah is worse than killing." [Al- Qur'an 2:217]
The Words of Allâh were quite clear and said that the tumult created by the polytheists was groundless. The sacred inviolable sanctities had been repeatedly violated in the long process of fighting Islam and persecuting its adherents. The wealth of the Muslims as well as their homes had already been violated and their Prophet [pbuh] had been the target of repeated attempts on his life. In short, that sort of propaganda could deservedly be described as impudence and prostitution. This has been a resume of pre-Badr platoons and invasions. None of them witnessed any sort of looting property or killing people except when the polytheists had committed such crimes under the leadership of Karz bin Jabir Al-Fahri. It was, in fact, the polytheists who had initiated such acts. No wonder, for such ill-behaviour is immanent in their natural disposition.
Shortly afterwards, the two captives were released and blood money was given to the killed man’s father.[For details see Za'd Al-Ma'ad 2/83-85; Ibn Hisham 1/605; Rahmat-ul-lil'alameen 1/115, 2/468]
After this event, Quraish began to realize the real danger that Madinah could present with. They came to know that Madinah had always been on the alert, watching closely their commercial caravans. It was then common knowledge to them that the Muslims in their new abode could span and extend their military activities over an area of 300 miles. and bring it under full control. However, the new situation borne in mind, the Makkans could not be deterred and were too obstinate to come to terms with the new rising power of Islam. They were determined to bring their fall by their own hands and with this recklessness they precipitated the great battle of Badr.
The Muslims, on the other hand, and at the behest of their Lord, were ordered to go to war in Sha‘ban 2 A.H:
"And fight, in the way of Allâh those who fight you; but transgress not the limits. Truly, Allâh likes not the transgressors. And kill them wherever you find them, and turn them out from where they have turned you out. And Al- Fitnah (polytheism or calamity) is worse than killing. And fight not with them at Al-Masjid-Al-Harâm (the Sanctuary at Makkah), unless they (first) fight you there. But if they attack you, then kill them. Such is the recompense of the disbelievers. But if they cease, then Allâh is Oft- Forgiving, Most Merciful. And fight them until there is no more Fitnah (disbelief and worshipping of others along with Allâh) and (all and every kind of ) worship is for Allâh (Alone). But if they cease, let there be no transgression except against Az-Zalimûn (polytheists, and wrong-doers, etc.)" [Al-Qur'an 2:190-193]