How Does the Mind Consciousness Perfume the Manas?

How does the mind consciousness perfume the manas? The mind consciousness must engage in attention, deliberation, and wholesome reflection in accordance with the Dharma regarding all matters and principles. At the same time, this allows the manas to understand correct principles, and gradually the manas can come to accord with them. This is called perfuming the manas. The mind consciousness must deliberate; without deliberation, it cannot perfume the manas. When the mind consciousness frequently deliberates on a certain principle, allowing the manas to follow and accord with it, then after being perfumed, the manas can also form new habitual tendencies, and old unwholesome habits are thereby transformed.