The image is used in several articles, but it appears the only time I can find him wearing that black turban is right around (before/after?) 9/11. The rest are from the same video, just re-used.
http://www.mucadele.com/modules.php?name=Forums&file=viewtopic&t=2830
http://www.ribaat.org/services/forum/showthread.php?s=837069a24011ff7bf69f2ffbf911bf20&t=29835
http://www.ribaat.org/services/forum/showthread.php?s=837069a24011ff7bf69f2ffbf911bf20&t=31432