Donkey's word
Nasreddin Hodja

One day a neighbor called on Molla.

"Molla, I want to borrow your donkey."

"I'm sorry," Molla said, "but I've already lent it out."

As soon as he had spoken, the sound of a donkey braying came from Molla's stable.

"But Molla, I can hear your donkey in there."

"Shame on you," Molla said indignantly, "that you would take the word of a donkey over my word."