I first heard it while watching the movie Baba Aziz, The Prince That Contemplated His Soul.
This the translation of the poem.
Oh day, wake up! Atoms dance. The whole universe dances from them. possessed souls dancing in ecstasy. I 'll whisper in his ear ... drag them to where this dance. All atoms in the air and in the desert ... You know, they seem crazy. Every atom, happy or sad ... is delighted by the sun. There is nothing more to say.
Pictures in this video are from my collection. Enjoy!