تا همیشه

A would-be disciple came to Nasrudin's hut on the mountain-side. Knowing that every action of such an enlightened one is significant, the seeker watched the teacher closely.
"Why do you blow on your hands?"
"To warm myself in the cold."
Later, Nasrudin poured bowls of hot soup for himself and the newcomer, and blew on his own.
"Why are you doing that, Master?"
"To cool the soup."
Unable to trust a man who uses the same process to arrive at two different results -- hot and cold -- the disciple departed.

P.S. : Be more careful!