Muhammad Baqir al-Sadr, also known as al-Shahīd al-Khāmis, was an Iraqi philosopher, and the ideological founder of the Islamic Dawa Party, born in al-Kadhimiya, Iraq. He was father-in-law to Muqtada al-Sadr, a cousin of Muhammad Sadeq al-Sadr and Imam Musa as-Sadr