What is the life story of the Messenger, peace and blessings be upon him, from the age of eight to twenty-five?

The grandfather of the Messenger of Allah, peace and blessings be upon him, Abd al-Muttalib, passed away when he was eight years old. His uncle, Abu Talib, took him into his care and traveled with him to Syria when he was twelve years old. There, they met the monk Bahira, who recognized him by his characteristics and warned Abu Talib about the Jews. The Messenger of Allah, peace and blessings be upon him, witnessed the War of Fijar when he was fifteen years old, preparing arrows for his uncles. He also attended the Hilf al-Fudul (Pact of the Virtuous), in which some Quraysh tribes pledged to support the oppressed. He herded sheep in his youth and was known for his trustworthiness and truthfulness, earning him the titles "the Truthful" and "the Trustworthy." When Khadijah heard of this, she offered him to trade with her wealth on a journey to Syria when he was twenty-five years old. He accepted and returned with a large profit, then married her.