directly from the person who said it or did it I want to hear the story from Ty, straight from the horse's mouth.
directly from the person involved I went over to my friend`s house so that I could hear about her wedding straight from the horse`s mouth.
From the highest authority.
In horse racing circles tips on which horse is a likely winner circulate amongst punters. The most trusted authorities are considered to be those in closest touch with the recent form of the horse, i.e. stable lads, trainers etc. The notional 'from the horse's mouth' is supposed to indicate one step better than even that inner circle.
© 2004 The Phrase Finder
. Take a look at Phrase Finder’s sister site, the Phrases Thesaurus
, a subscription service for professional writers & language lovers.