I am a Buddhist and I want to share as much as I can the biography of the monk (Arahant) of Buddha at Buddha period. First that come in my mind was Angulimara. All the data I copied directly from Wikipedia as it most trusted source in Internet and I don't want to translate from Thai language into English.
Early life
According to the sutta and commentary texts, omens seen at the time of Angulimala's birth (the flashing of weapons and the appearance of the 'constellation of thieves' in the sky) indicated that Angulimala would become a robber. Angulimala's father, the Brahmin chaplain to the king of Kosala, named him Ahimsaka ("the harmless one" - derived from the Sanskrit and Pali word Ahimsa), as an attempt to deter the dark fate predicted at his birth (Pad indicates that he was initially named Himsaka ("the harmful one"), but that the name was later changed).
Ahimsaka was sent to Taxila to study under a well-known Brahmin guru. There he excelled in his studies and became the teacher's favourite student, enjoying special privileges in his teacher's house. However, the other students grew jealous of Ahimsaka's speedy progress and sought to turn his master against him. To that end, they made it seem as though Ahimsaka had seduced the master's wife and boasted that he was wiser than the guru. Unwilling or unable to attack Ahimsaka directly (Pad states that Ahimsaka was as "strong as seven elephants", while Ps states that the teacher worried that his business would suffer if he was found to have murdered a student), the teacher said that Ahimsaka's training was complete, but that he must provide the traditional final gift offered to a guru before the teacher would grant his approval. As his payment, the teacher demanded 1,000 fingers, each taken from a different victim, thinking that Angulimala would be killed in the course of seeking this grisly prize (Pad states that Angulimala was required to fetch 1,000 fingers from right hands, seemingly unaware that this could be achieved by killing 200 people. Ps states, even more strangely, that he was told to "kill a thousand legs", and gathered fingers only as an aid to keeping an accurate count).
