In the previous śloka, Bhagavān spoke about the imperishable reality sought by committed spiritual seekers. He now describes how an advanced devotee prepares the mind and life force for meditation at the time of death, as part of the gradual course to liberation.

Why does meditation upon Bhagavān require a form or symbol?

Bhagavān's essential nature is formless and beyond sensory perception. Since the mind ordinarily concentrates upon recognizable forms and attributes, the scriptures provide a concrete support for meditation, called ālambanam [a support for meditation].

There are two kinds of supports:

• Pratimā-ālambanam [a personified divine form], such as Kṛṣṇa, Rāma, Śiva, or Devī, depicted with recognizable features.

• Pratīka-ālambanam [a symbolic representation], such as a Śivaliṅga, a flame, a simple turmeric representation of Gaṇeśa, or the sacred syllable Oṃ.

These forms and symbols do not limit Bhagavān. They help the devotee concentrate upon the limitless reality they represent.

The devotee may choose a suitable form or symbol. In 8.12–8.13, Bhagavān uses meditation upon Oṃ, called Oṃkāra-upāsanā, as a representative example. Oṃ is not compulsory for every devotee.

With this background, Bhagavān describes three stages of the advanced yogi's preparation at death.

1. Withdraw the senses from external distractions.

Our senses continually bring information from the world into the mind. A sound, sight, or sensation can trigger thoughts and interrupt concentration.

Bhagavān therefore says sarvadvārāṇi saṃyamya [having restrained all the sensory gateways]. The devotee withdraws attention from external experiences so that the mind can remain focused inwardly.

2. Concentrate the mind upon Bhagavān in the heart.

After withdrawing the senses, the devotee brings the mind inward and visualizes Bhagavān in the heart.

This is expressed as mano hṛdi nirudhya [having confined the mind to the heart].

The heart is the traditional center used for inward meditation upon Bhagavān. The instruction does not mean that a miniature physical deity resides inside the anatomical heart. Rather, the devotee establishes the chosen divine form or symbol firmly in the mind.

3. Direct the life force toward the crown of the head.

Bhagavān says mūrdhni ādhāya ātmanaḥ prāṇam [having placed one's prāṇa at the crown of the head].

Here, prāṇa means the vital life force. The advanced yogi withdraws the vital energies from their various centers and directs them upward through the central subtle channel, called suṣumnā-nāḍī, toward the brahma-randhra [the subtle opening associated with upward departure at the crown].

This is a specialized yogic accomplishment developed through extensive training. It is not an instruction for ordinary devotees to manipulate their breathing or physically direct energy toward the head.

Remaining established in yogic concentration

Bhagavān concludes with āsthitaḥ yoga-dhāraṇām [having undertaken yogic concentration].

The accomplished devotee remains firmly absorbed in Bhagavān, supported by the chosen form or symbol. The withdrawal of the senses, inward concentration, and upward direction of prāṇa are maintained through previously developed yogic mastery.

The next śloka, 8.13, explains the specific use of Oṃ together with remembrance of Bhagavān.

Thus, 8.12 describes the advanced devotee's inward preparation at death: withdrawing the senses, establishing the mind upon Bhagavān in the heart, directing prāṇa toward the crown, and maintaining yogic concentration. These practices belong to the specialized course of krama-mukti [gradual liberation through Brahmaloka]. The forms and symbols used for meditation are supports for remembering the same limitless Bhagavān, with Oṃ presented as one representative choice.