"Wie Sand in Rastullahs Hand" is an adventure by Jörg Raddatz for 3-5/6 characters at lvl 5-9.
adventure ID: A17
From the back of the book:
"Life is hard in desert Khom - for man and for beast. Only the strong have a chance, the weak will vanish like sand in Rastullah's hand ...
In this adventure Khom plays it's own part - no less fierce and treacherous than the villains and monsters awaiting you in any case."