As in the Christian idea of spiritual rebirth. I think all religions have the idea of dying to the mundane in order to know the Divine. This idea is just phrased differently in different religions/spiritual paths and it is too bad that people's individuated egos force them to emphasize supposed difference instead of the unity of vision. Incidentally, 'nafs' as breath could be referring to prana as in all the Hindu scriptures. If so, then dissolution of the ego would mean cutting off any supply of prana to the lower chakras or talas below the Muladhara and instead taking prana up through the seven main chakras in order to know the Oneness of Divinity.