Find <a href="/mobs/details.html?id=322">Salah</a>'s tent in the Moslem camp and ASK SALAH FRIEND. At 9pm ASK ALAM FRIEND. <a href="/mobs/details.html?id=632">Alam</a> asks you to vow to protect Saladin. VOW SALADIN, he tells you to wait. Wait. At or around 2am, an assassin enters the tent. Kill assassin. (Rescue Saladin if you can.)
If you ever kill Salah, you'll get the betrayal whois.
credit: <a href="http://www.legenddb.com">legenddb</a>