Good joke

The Middle Eastern folk hero Mulla Nasr Edin used to 
bring a team of donkeys laden with saddle bags across the 
border, week after week.

    The local customs inspector became convinced that Mulla was 
smuggling something.  But, year after year, each time the 
inspector stopped him and opened up the saddle bags, he could
nothing at all.

    Finally, the customs inspector retired from his job and 
he sought out Mulla and asked, "Mulla, all those years 
I know you were smuggling something. But what was it?"

    Mulla Nasr Edin shrugged and answered, "Donkeys."