In Mahayana, a bodhisattva is one who has taken a vow to postpone their own enlightenment until they can assist all sentient beings to become enlightened. So a bodhisattva, be definition, is one who NOT a buddha yet.
Bhikkhus, if you develop and make much this one thing, it invariably leads to weariness, cessation, appeasement, realization and extinction. What is it? It is recollecting the Enlightened One. If this single thing is recollected and made much, it invariably leads to weariness, cessation, appeasement, realization and extinction. Anguttara-Nikaya: Ekanipata: Ekadhammapali: Pañhamavagga BuddhanussatiSCVSMVMMBS