Straight from the horses mouth.
→정확한 소식통이야!

〔예문〕
A :I've got something to tell you.
    얘기하나 해줄께

B : What is it?
    뭐야?

A : Mike will be laid off soon.
   마이크가 곧 해고 될꺼래.

B:Who told you?
   누가 그래?

A: I got it straight from the horse's mouth.
   정확한 소식통이야!

※ be laid off :해고된