Bhagavad-Gita: Chapter 5, Verse 29

Rudra Vaisnava Sampradaya:

Visnuswami

Sridhara Swami's Commentary

Now the question may arise as to how one may achieve moksa or liberation from material existence by merely controlling the mind and senses in this way? Lord Krishna spoke this verse to confirm that moksa is attained by knowledge and not merely by control of the mind and senses. The words jnatva mam which means knowing Lord Krishna as sarva-loka mahesvaram or the sovereign lord of all the worlds and knowing Lord Krishna as suhrdam sarva-bhutanam the benevolent well-wisher of all living beings. This knowledge is essential and one who comprehends this knowledge along with performing yoga or the science of the individual consciousness attaining communion with the ultimate consciousness becomes qualified to attain moksa.

I bow down to the Supreme Lord Krishna who thus removed the thorn of doubt regarding cultivation of knowledge and selfless actions by prescribing the combination of the two in proper sequence.

Brahma Vaisnava Sampradaya:

Madhvacarya

Madhvacarya's Commentary

Lord Krishna has revealed the confidential purpose of meditation and the method of attaining moksa or liberation from material existence in this verse.

Sri Vaisnava Sampradaya:

Ramanuja

Ramanuja's Commentary

Knowing Lord Krishna to be bequeather of all rewards for all actions. The sovereign lord of all existence. The intimate friend within all beings and wellwisher of all beings attains moksa or liberation from material existence. What this means is that if karma yoga or the selfless practice of prescribed Vedic activities and are the sum total of all duties are performed consciously as offerings of worship to Lord Krishna then this in itself is enough to grant moksa. This is the easiest and most practical as it is so simple to do. Moreover who would not be inclined to offer such service to a dear friend especially when this friend is such a universal benefactor existing within and without every living being throughout all of creation.

Kumara Vaisnava Sampradaya:

Nimbaditya

Kesava Kasmiri's Commentary

Thus the entire scope of selfless actions such as yagnas offerings of worship to the Supreme Lord, various practices of austerities along with processes of augmenting knowledge culminates in to equanimity, detachment from worldliness and atma tattva or realisation of the soul. These results are not attained independently but must come through true accurate knowledge of the Supreme Lord Krishna, who is the sole bestower of all rewards and the sovereign ruler of all existence and who is neutrally the benevolent well wisher of all living entities such a knowledgeable being attains realisation of the final beatitude and moksa or liberation from material existence. This realisation will be further spoken of by Lord Krishna in chapter fifteen.