Not actually true. Eichmann wasn't in Egypt then.
Just because you can find a document -- a highly speculative intelligence report -- that spreads a rumor, doesn't mean what it says is really true.
I think he was also an uncle of another infamous terrorist, Yasser Araffat.
Latest news about Mufti:
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The Obama administration and the diplomatic tsunami
Jerusalem Post-Sep 29, 2012
The mufti of Jerusalem enthusiastically urged his ally Hitler to wipe out European Jews during World War II, before the State of Israel was ...
http://www.jpost.com/Opinion/Op-EdContributors/Article.aspx?id=286100
Dromi: Arab trouble is no surprise
Savannah Morning News-Sep 15, 2012
... one of the most vocal Arab figures during the war was Haj Amin al-Husseini, the Mufti of Jerusalem, who met Hitler in Berlin in Nov. 21, 1941.
http://savannahnow.com/column/2012-09-16/dromi-arab-trouble-no-surprise
Abbas, Temple Denial, and the Distortion of History
American Thinker-Sep 8, 2012
... The committee of Muslim scholars in Jordan’s Islamic Action Front, for one, “urge[d] ... jihad to liberate Al Aqsa and save it from destruction and sabotage from Jewish usurpers” — a spurious claim, since construction was taking place well outside the Mount platform, some 100 meters from the mosque, and clearly posed no possible threat. It is also an oft-repeated charge, suggests Israeli columnist Nadav Shragrai, frequently used by Arabs against Israel as a way of inciting hatred toward Jews for their perfidiousness and guile. This he calls the “Protect the Al Aqsa Mosque” blood libel — a propaganda tool that has been used since the 1920s to cause mistrust of Jews when the then-Grand Mufti Haj Amin al-Husseini, Hitler’s Middle East ally, exhorted Muslims everywhere to defend Islamic holy places in Jerusalem from the pernicious Jews, causing riots, bloodshed, and 133 Jewish deaths.
http://www.americanthinker.com/2012/09/abbas_temple_denial_and_the_distortion_of_history.html
Der entfesselte Mob
haGalil onLine-Sep 18, 2012
Zusammen mit einer Verehrung des Mufti von Jerusalem, der mit Hitler im Holocaust kooperierte, verstanden die Ägypter, dass den Europäern ...
http://www.hagalil.com/archiv/2012/09/18/entfesselter-mob/