Straight from the horse's mouth.

Straight from the horse's mouth.
Getting it "Straight from the horse's mouth" means receiving information directly from the most reliable source or original source, without any distortions. Historically, examining a horse’s teeth was a way to learn its age and health directly, thus this idiom emphasizes direct or firsthand authenticity.
I heard it straight from the horse's mouth.
It means receiving information directly from a reliable or authoritative source.
She got the information straight from the horse's mouth.
It signifies she got the information directly from a trustworthy or crucial source.
You can trust this news; it's straight from the horse's mouth.
It indicates that the news can be trusted because it came from a reliable source.