Bhagavad-Gita: Chapter 10, Verse 17

Rudra Vaisnava Sampradaya:

Visnuswami

Sridhara Swami's Commentary

Expressing the need for Lord Krishna to definitively reveal precisely how He should be meditated upon; He is humbly beseeched in this verse and the next. Although the Supreme Lord can be meditated upon by focusing on His different potencies, qualities and glories, Arjuna's concern was what was the best way for him to contemplate the Supreme Lord. In which way specifically should he always think of Lord Krishna throughout his life in order that he would most assuredly attain Him.

Brahma Vaisnava Sampradaya:

Madhvacarya
There is no commentary for this verse.

Sri Vaisnava Sampradaya:

Ramanuja

Ramanuja's Commentary

These questions are asked to Lord Krishna by the words katham vidyam aham yogims meaning how to be able to know and follow yoga the science of the individual consciousness attaining communion with the ultimate consciousness, and engage in constant meditation on Him with devotion. Devotion knowing the Supreme Lord is endowed with the six opulences of total power, total beauty, total wisdom, total fame, total wealth and total renunciation which accompany His illustrious attributes of omniscience, perfection, eternity, sovereignty, majesty etc. Now Arjuna desires to know in what other ways yet untold is Lord Krishna's vibhuti transcendental majestic opulence displayed throughout existence which exemplifies His Supreme eminence and paramount position as the ultimate controller of all creation.

Kumara Vaisnava Sampradaya:

Nimbaditya

Kesava Kasmiri's Commentary

The necessity of accurately and distinctly knowing the Supreme Lord Krishna's vibhuti or divine, transcendental opulence is expressed by Arjuna with the word katham vidyam aham meaning how to know. The word yogim is expressing that Lord Krishna is the master of yoga or the science of the individual consciousness attaining communion with the ultimate consciousness. Being inferior to the Supreme Lord it is not possible to fathom His glories, powers and paramount supremacy without His mercy so he is requesting Lord Krishna to explain His unimaginable glories that are beyond even elevated and advanced conceptions so he can get an idea how to correctly meditate upon the Supreme Lord and not imagine or concoct some ideas that have no validity to reality. Because only the Supreme Lord knows Himself and it is not possible to understand and meditate upon Him in full.