A master and his disciple are riding across the Arabian desert.  The master makes use of every moment of their ride to teach the disciple about faith.

 "Trust in God," he says.  "God never abandons his children."     

At night, in their camp, the master asks the disciple to tie the horses to a nearby rock.  The disciple goes to the rock, but remembers what the master has taught him: "He must be testing me," he thinks.  "I should leave the horses to God."  And he leaves the horses unfettered.

   In the morning, the disciple sees that the horses have disappeared.  Revolted, he comes back to his master.               
"You know nothing about God," he exclaims. 
"I left the horses in His care, and now the animals are gone."   
"God wanted to care for the horses," the master answered.
  "But to do that, he needed your hands to tie them."