I'm slipping the day it turns cold in Hades
Hades is not referring to the Greek God of the Underworld here. However, contrary to popular belief, Hades and Hell are two different places. Hell is the fiery, evil place that we all know to be, but Hades is the place where everyone goes before they are sent to Heaven or Hell (Jesus himself was sent there). It is believed that the saved rest in a paradise before they go to Heaven, while the unsaved rest in a place of temporary, fiery, torment before they go to Hell. Anyway, Ryan is saying that he will never fall off.
To help improve the meaning of these lyrics, visit "Riviera Flow (Live Good)" by Ryan Leslie (Ft. Raekwon) Lyrics and leave a comment on the lyrics box