Bhagavad-Gita: Chapter 11, Verse 52

Rudra Vaisnava Sampradaya:

Visnuswami

Sridhara Swami's Commentary

Revealing the extraordinary grace that He had bestowed on Arjuna, the Supreme Lord Krishna declares that idam-rupam His original two-armed form which is pure spiritual sat-cid-ananda or eternal existence, unlimited cognizance and endless bliss. This form is almost never seen by any of the demigods who always hanker to see it but are unable as it is extremely rare to behold. That Lord Krishna is no longer refering to the visvarupa or divine universal form is evident by the words drstavan asi which mean are presently seeing.

Brahma Vaisnava Sampradaya:

Madhvacarya

Madhvacarya's Commentary

The original two-armed form of the Supreme Lord Krishna is very rarely seen any where in the material existence and even the demigods are always hankering for a glimpse of it; but despite immense life spans of hundreds of thousands of years they are unable to see it.

Sri Vaisnava Sampradaya:

Ramanuja

Ramanuja's Commentary

Lord Krishna explains His two-armed form is extremely difficult to behold and is very rarely seen. The demigods in the heavenly planets having heard about it are always hankering to see His visvarupa or divine universal form but it is inaccessible to them and His two-armed form they have no opportunity to witness as they are unaware of it.

Kumara Vaisnava Sampradaya:

Nimbaditya

Kesava Kasmiri's Commentary

Lord Krishna reveals that it is extremely difficult to see His human two- armed form and He emphasises this with the words su-durdarsam which means very rarely seen. The visvarupa or divine universal form is impossible to be seen without His grace, yet His four armed human form is so rare that the demigods are always hankering to see it even for a moment; but now Lord Krishna is revealing that His beautiful two armed human form is the rarest of all and that it is so seldom revealed the demigods never get the chance to see it.