Umayr bin Abi Waqqas (r.a.)
Umayr was the brother of Sa'd bin Abi Waqqas. He became a Muslim after Hz. Sa'd, when he was 13 or 14 years old. Hz. Umayr, who followed the right path despite the pressure of his mother, migrated to Madinah afterwards.
He wanted to take part in the Battle of Badr, which was the first battle against the polytheists. He was 16 years old then. When he saw that the Messenger of Allah did not accept those who were very young, he was worried that the Messenger of Allah would send him back. He tried to hide but the Messenger of Allah saw him. He asked Umayr to return. Umayr thought, "Maybe Allah will give me the honor of being a martyr." When he heard that the Messenger of Allah wanted him to return, he started to cry. This enthusiasm of his to fight the polytheists at such a young age moved the Messenger of Allah and he allowed Umayr to fight.
As soon as the battle started, Hz. Umayr started to attack the enemy heroically. He entered among them and caused great distress. After a while due to the wounds he received, he became a martyr and flew to Paradise. Thus, he became one of the martyrs of Badr at such a young age.
May Allah be pleased with him!