In Farid al-Din Attar's The Conference of the Birds, the anecdote of God's message to Prophet David illustrates a central Sufi principle: disinterested worship. God commands David to tell His servants to worship Him not out of a desire for Heaven or a fear of Hell, but solely because He is intrinsically worthy of devotion. This narrative emphasizes that true spiritual servitude must be devoid of self-interest, driven only by recognizing the Divine's ultimate majesty and right to be worshipped for His own sake.