Bhagavad-Gita: Chapter 8, Verse 12

Rudra Vaisnava Sampradaya:

Visnuswami

Sridhara Swami's Commentary

The proposed means together with its accessories is being stated by in this verse and the next. Lord Krishna uses the word samyamya which means controlling. Withdrawing all the inlets of the organs being eyes, ears, tongue, etc. by non-cognition of external objects and focusing the mind in the heart, dismissing all external conceptions while fixing the life force in the ajna cakra between the eyebrows one should establish themselves and become absorbed in yoga or the science of the individual consciousness attaining communion with the ultimate consciousness.

Brahma Vaisnava Sampradaya:

Madhvacarya
There is no commentary for this verse.

Sri Vaisnava Sampradaya:

Ramanuja

Ramanuja's Commentary

Lord Krishna uses the words sarva-dvarani samyamya means controlling the passages which enter into the body. This denotes withdrawing the senses from external cognition or restricting the senses from their normal outgoing tendencies. The words hrdi-nirudhya means locking the mind in the heart. It denotes directing devotional feelings from the mind to the atma or soul in the heart and offering them to the aksaram or imperishable Supreme Lord enthroned there. The words yoga-dharanam or performing the science of the individual consciousness attaining communion with the ultimate consciousness in unwavering meditation. This denotes concerted concentration in perfectly meditating upon the Supreme Lord with complete attention.

Kumara Vaisnava Sampradaya:

Nimbaditya

Kesava Kasmiri's Commentary

Lord Krishna describes the method in brief with details with the word samyamya meaning restrained. Having restrained all the senses by withdrawing them from their respective objects, all the doors of the body such as the eyes, ears, etc., along with the cessation of all worldly considerations, fixing the mind in the heart and directing the life breath to the ajna cakra between the eyebrows one so becomes established in yoga or the science of the individual consciousness attaining communion with the ultimate consciousness.