What do you know about Al-Abbas ibn Abd al-Muttalib, the uncle of Prophet Muhammad (peace and blessings be upon him), regarding his lineage, piety, asceticism, worship, and interactions with the Companions?

Al-Abbas ibn Abd al-Muttalib, the uncle of the Prophet, peace and blessings be upon him, was born three years before the Year of the Elephant. He was characterized by honor, awe, intellect, and beauty. He was among the tallest, most handsome, and loudest-voiced of men. It is said that he embraced Islam before the Hijra but concealed his conversion. He married Umm al-Fadl and had children with her, including al-Fadl. He stood firm with the Prophet on the day of Hunayn. He passed away in the year 32 or 34 AH at the age of approximately 88 years. Uthman prayed over him, and he was buried in al-Baqi'.