Hey Ali.You're welcome!
You have written your question(question about "dude" in a wrong place.I didn't receive any notification for that,I saw that accidentally.
And about that "hey dude";it means "hi friend" or something like that.Can you understand English?
Well,can I ask you a question?Why did you want to know the meaning of that sentence?I think it's from a tale from our Saadi's Golestan,huh?Are you reading Golestan?