Sayyid Qutb

Sayyid 'Ibrāhīm Ḥusayn Quṭb ( or ; , ; "Sayyid Quṭb"; 9 October 1906 – 29 August 1966), known popularly as Sayyid Qutb (), was an Egyptian author, educator, Islamic scholar, theorist, revolutionary, poet, and a leading member of the Egyptian Muslim Brotherhood in the 1950s and 1960s. 
In 1966, he was found guilty of planning the assassination of Egyptian President Gamal Abdel Nasser and was executed by hanging in Cairo at the age of 59. 
He is called "the Father of Salafi jihadism. Many have also called him the father of al-Qaeda and ISIL since these groups were founded and inspired by his ideas.