For this, he was demoted to the rank of novice and sent on a quest for redemption.
He failed to recover an Apple of Eden from Robert de Sablé in July 1191 and subsequently allowed the Templars to attack the town of Masyaf, headquarters of the Assassins.
Raised to be an Assassin from birth, Altaïr became a Master Assassin at age 25, an accomplishment unheard of for one so young. His leadership saw to the spread of the Assassins' influence throughout Europe and Asia. During his tenure as Mentor, through the knowledge of an Apple of Eden, Altaïr made several discoveries and inventions that greatly helped the Order's progression. Altaïr Ibn-La'Ahad (Arabic: الطائر ابن لا أحد 1165 – 1257) was a member of the Levantine Brotherhood of Assassins who served as their Mentor from 1191 until his death in 1257.