On the morning of 17th Ramadan, 2 A.H., the great Battle of Badr, the first battle in the history of Islam, took place. At that battle, Allah granted the believers victory over the polytheists.
Ammar was fighting with enthusiasm. When the polytheists escaped, Ammar saw Abu Jahal. So, he remembered those days when Abu Jahal tortured the Muslims and tortured his parents. Now, the swords of the persecuted got revenge on the unjust. Ammar looked at the sky and thanked Allah, the Glorified, for his victory.