Urna Mukherjee's "Being" is a short poem about how hard it is to hold on to the feeling of simply existing. The speaker looks back on "the memory of being" and finds nothing sharp or clear. Instead, it is "a haze of restless thoughts," a blur of ideas that never settle into one shape.
The comparison in the last line carries most of the feeling. A "sultry summer noon" is hot, heavy and still, the kind of hour when the air seems thick and it is hard to focus. Yet the thoughts in the haze are "restless," so the stillness on the surface hides something uneasy underneath. The speaker seems both drowsy and unsettled.
The mood is languid, slightly uncomfortable and reflective. Nothing happens in the poem, and that fits: it captures a state of mind rather than an event. Because it is so brief, it leaves us with one lingering image, and we are free to decide whether that haze feels peaceful or oppressive, or a little of both.