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It is fitting to compare this seventh insight to the radiance of the sun, as the sun's light is many times stronger than that of a star. Similarly, the seventh insight, Prabha Drishti, is many times more powerful and profound than the sixth insight, Kanta Drishti. Calling it "Prabha" is also accurate, as Prabha means the pervading, all-encompassing light. Just as the sun's radiance is intensely bright, this insight's all-pervading light is intensely bright, powerful, and capable of penetrating. As sunlight illuminates all objects and the entire world, this insight's all-pervading light reveals the true nature of all objects.
The seventh limb of yoga, Dhyana (meditation), is characterized by this pervading, all-encompassing light. Therefore, these two, Dhyana and this insight, are constantly intertwined. Knowledge and meditation are interconnected; the stronger the knowledge, the stronger the meditation. This insight is thus conducive to meditation, a beloved companion to meditation, where meditation is deeply cherished by the yogi. Therefore, the yogi, the wise man, who is established in this state, meditates on the undivided self, which is most dear to him. And because this self-meditation is sharp, self-aware, and rooted in the self, there is rarely any room for distractions to arise; it is thus free from distractions.
After attaining the sixth limb, Dharana (concentration), the seventh limb, Dhyana (meditation), arises naturally. Dharana means focusing the mind on a specific object or area, and through repeated impressions, the mind is drawn towards its essence and becomes concentrated there. Dharana, which involves holding the mind towards the nature of the self, gives rise to Dhyana, which is the concentration of the mind on the self. "Yogaś citta-vṛtti-nirodhaḥ" (Yoga Sutras 1.2). Dharana involves the mind's focus on the essence of the object, while Dhyana involves the direct realization of the pure self. "Tatra pratyakṣa eva jñānataṁ sthānam" (Yoga Sutras 3.2). The unification of the mind's focus in the realm of Dharana, meaning the continuous flow of a single, undivided result in the realm of Dharana, is Dhyana. (See Dva. Dva.) "Steady determination is Dhyana, and unsteady mind is Bhavana, Anuprekṣā, or Chinta, these three. In one sense, the final state of the mind is Dhyana. In the context of multiple meanings, even a long-lasting state, if it is unbroken and undivided, is a continuous stream of Dhyana." (See Adhyatma Sara).
There are four main types of Dhyana: (1) Atma, (2) Raudra, (3) Dharma, (4) Shukla. Of these, Atma and Raudra are undesirable, as they are the causes of the dualistic world and are unrefined and harmful.