A blow of Muslim spirit, a pull of Muslim spirit, is the secret of the sky and the heavens.

This profound couplet speaks to a mystical, irresistible pull—a force that transcends mere attraction. According to Allama Iqbal, the 'jazb-e-musalmani' (the Muslim attraction/pull) is not just a personal feeling; it is the very secret ('sirr') of the heavens and the cosmos itself. It suggests that the spiritual connection and commitment to one's faith or purpose is the ultimate guiding force, connecting the individual to the divine order of the universe.