FILE - In this Nov. 23, 1988 file photo, former world heavyweight boxing champ Muhammad Ali prays with a class of Muslim boys at Dafaalah el Sa'em Mosque in Khartoum, Sudan. As one of the most famous Muslims in the world, he traveled widely as a goodwill ambassador, spreading the message of Islam as a religion of peace. (AP Photo/Abder Raouf, File)