The same two words end every couplet, and they mean something different every time. A veil slipping is slow, and lovely. A body growing up is slow, and unbearable to somebody watching. A night of separation is slow. An answer given through pressed lips is slow because there is somebody else in the room. And in the last couplet, slowness is what a man requests while being beheaded.
The cruelty of the second couplet is in the timing. She started veiling from him when she began to grow up, and the two things did not happen at the same speed. Modesty arrived all at once, in a single stroke. Youth came on by degrees. So there was a stretch of time, and the poem carefully does not say how long, in which she was already hidden from him and still becoming worth hiding.
Then there is a couplet where the speaker appears to be dead and does not mention it. Angels, he says, I have been awake all through the night of separation, let me sleep now, and do the reckoning some other time when you are free. Munkar and Nakir are the two who question the dead in the grave. He is asking them to come back another day, in the voice of a man asking for the curtains to be left shut, and the whole enormity of where he is only arrives if you know who he is talking to.
And then the last couplet, which is very funny and gets worse the longer you look at it. They are cutting his head off without any mercy at all, and what he says to them is: sir, slowly. Your honour, slowly. He keeps the honorifics. He is unfailingly polite to his executioner. And the request is not that they stop, only that they take longer over it, because being attended to like this is the closest thing to being wanted that he is ever going to get.
It reached film in 1982, in Deedar-e-Yaar, sung by Kishore Kumar and Lata Mangeshkar. That is how most people who know these lines first met them, rather than on a page.
How it rhymes
Every second line closes on the same word — آہستہ آہستہ
, aahista aahista. That repetition is the radif.
The rhyme falling just before it is the qafiya: The -aab ending before the refrain: naqab, aaftab, shabab, hisab, javab.
Hearing the two land together at the close of every sher is most of what makes this form sound the
way it does.