After we have learned about the dharma and reflected on it then it is time for us to put it into practice through meditation. While this is ultimately what we are aiming for, and it is this practice that is going to really resolve our problems, we really cannot engage in it until we understand what we are meant to be doing. That is why listening and reflecting are so important and why the three—listening, reflecting and meditating—are inextricably linked; it is not possible to separate them from one another. Though both the Tibetan and the Ch’an traditions talk about the necessity of discipline, meditation and wisdom, the three terms of listening, reflecting and meditation are distinct to the Tibetan tradition. Even so, the actual practices of studying, thinking about and meditating on the dharma are ones that all students of the Mahayana tradition—and, in fact, all Buddhist students, regardless of their tradition—must do. This is very important.
Depicted from "Guide to the Four Preliminary Practices 2 - Part 15" April, 2015, Vancouver, Canada