Chenrezig

Nine vehicles (theg pa dgu). The nine gradual vehicles according to the Nyingma school: Shravaka, Pratyekabuddha, Bodhisattva, Kriya, Upa, Yoga, Maha, Anu, and Ati.
The first two are Hinayana; the third is Mahayana; the next three are the Three Outer Tantras; and the last three are called the Three Inner Tantras.
Also: nine gradual vehicles (theg pa rim pa dgu).