In the IInd movement of ‘Burnt Norton’ Eliot coagulates space and time into the ‘still point’ of the turning world :

                                    “At the still point of the turning world. Neither flesh nor fleshless;
Neither from nor towards; at the still point, there the dance is,
But neither arrest nor movement. And do not call it fixity,
Where past and future are gathered. Neither movement from nor towards,
Neither ascent nor decline. Except for the point, the still point,
There would be no dance, and there is only the dance.”

Let me cite further from Kalātattvakośa, :-

bindu does not only constitute the thought-element but also serves as the material of all the elements of matter and speech, that is, everything is made of bindu whether it is the physical body or a metaphysical principle. Hence, bindu is the meeting point of spirit and matter.

This is precisely what Eliot is heading towards when he says later in this movement :

                                   “Time past and time future
Allow but a little consciousness.
To be conscious is not to be in time
But only in time can the moment in the rose-garden,
The moment in the arbour where the rain beat,
The moment in the draughty church at smokefall
Be remembered; involved with past and future.
Only through time, time is conquered.”

To summarize so far – bindu arises as a unit of consciousness, it is a thought-element. Now, the dimensions of space, time, speech and form unfold from this ‘unit of consciousness’ and by that we mean that both the beginning and the end of all these aspects, these dimensions are glued together in the idea of bindu.