It was said he traveled the land spreading " the way of the ninja" or shinobi, either one.Wow!.. An AWESOME prediction!... Except for when so6p Said "dats my ninja way" knowing he was a monk. ..lol.. Still awesome bruh
This wasn't exactly clear as to what he meant, but since Naruto has been agreed upon by the Bijuu themselves as the Sage's reincarnation, then it would seem logical to have them share many thing, including a nindo.