Here is the English transalation of Kabir Das poem ya tarvar men ek pakheru.
On this tree is a bird: it dances in the joy of life.
None knows where it is: and who knows what the burden of its
music may be?
Where the branches throw a deep shade, there does it have its
nest: and it comes in the evening and flies away in the morning,
and says not a word of that which it means.
None tell me of this bird that sings within me.
It is neither coloured nor colourless: it has neither form nor
outline:
It sits in the shadow of love.
It dwells within the Unattainable, the Infinite, and the Eternal;
and no one marks when it comes and goes.
Kabir says: “O brother Sadhu! deep is the mystery. Let wise men
seek to know where rests that bird.”
Reference: Project Gutenberg