नान्तोऽस्ति मम दिव्यानां विभूतीनां परंतप।एष तूद्देशतः प्रोक्तो विभूतेर्विस्तरो मया॥
nānto ’sti mama divyānāṃ vibhūtīnāṃ parantapaeṣa tūddeśataḥ prokto vibhūter vistaro mayā
Word by word
The verse says
There is no end to my divine manifestations, conqueror of enemies. What I have said is one portion of the extent of my glories, declared to give you an idea of it.
In plain words
He says plainly that the list was a sample.
Uddeśataḥ — by way of indication. Enough to give you the idea.
The same warning he gave in verse nineteen, repeated now at the other end, which suggests he expects it to be misread.
Where you've felt this · in study
A new friend asks what your mother is like, and you tell her four things. The phrase she always says. How she is at weddings. What she did the time you failed an exam. The way she holds a cup. You have not described her. You have given enough that your friend would recognise her across a room.
Going deeper
Bracketing a list at both ends with the same disclaimer is a strong signal about how it is meant to be used.
Verse nineteen said: the chief ones only. This says: one portion, given to indicate. Together they rule out the reading where the twenty verses between them are a complete inventory of where the divine can be found, and by implication of where it cannot.
That reading is the natural one and it is the one being guarded against.
So the practical instruction is to stop collecting. The thing the chapter is trying to produce is not a longer list in your head but a different kind of looking, which you would apply to a street you walk down. A list you could finish would have defeated its own purpose, and this verse says so twice over.