How Does the Mind Consciousness Perfume the Manas?

The mind consciousness must engage in mental engagement, deliberation, and wholesome reflection in accordance with the Dharma regarding all matters; 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 permeating the manas. The mind consciousness must deliberate—if it does not deliberate, it cannot permeate the manas. When the mind consciousness frequently deliberates on a certain principle, causing the manas to comply, the manas, after being permeated, can also form new habitual tendencies, and the old unwholesome habits are thereby transformed.