Three yanas leading from the origin
Three Outer Yanas Leading from the Origin (Wyl. kun 'byung 'dren pa'i theg pa gsum) — the three causal vehicles of characteristics are:
Why are these three called ‘vehicles leading from the origin’? It is because they lead us along the path to the result of liberation from samsara by abandoning all the actions (karma) and destructive emotions (kleshas) which are the cause or ‘origin’ [of suffering].