The outcome of the Battle of Badr proved that

The outcome of the Battle of Badr proved that Allah supported the Muslim army. This was a significant event in Islamic history as it was the first major battle between the Muslims of Medina and the Quraysh of Mecca. Despite being outnumbered and less equipped, the Muslims were victorious, which demonstrated that their success was due to the support and assistance of Allah. It was a great morale boost for the early Muslim community and helped to establish Islam as a legitimate and powerful religion in the Arabian Peninsula.