This concept distills the moral of Jami's Baharestan tale in which Harun al-Rashid's vizier buys a slave at the Kufa slave market whose singing was said to draw birds down from the sky. As the party leaves the city, the slave weeps and sings verses lamenting the wound of separation from a beloved, revealing that he is in love with someone left behind in Kufa. Moved to inquire into his state, Rashid takes pity and sets him free. The tale links three ideas in Persian literary ethics: the revealing, almost supernatural power of the human voice and song (غنا); the anguish of love and separation (هجران) as a force stronger than servitude; and the way a just ruler's recognition of genuine love is transformed into mercy and the granting of freedom.