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2. An unbroken flow of knowledge in that object is Dhyāna.

The mind tries to think of one object, to hold itself to one particular spot, as the top of the head, the heart, etc., and if the mind succeeds in receiving the sensations only through that part of the body, and through no other part, that would be Dharana, and when the mind succeeds in keeping itself in that state for some time, it is called Dhyana (meditation).

तदेवार्थमात्रनिर्भासं स्वरूपशून्यमिव समाधिः ॥३॥