Quoth Dunyazad, "O sister mine, an thou be other than sleepy, tell us one of thy fair tales, so therewith we may cut short the waking hours of this our night," and quoth Shahrazad:--It hath reached me, O King of the Age, that the Lord of the Jann said to the Prince, "I will take thee under my safeguard and the Shaykh thou sawest in thy swevens was myself and I also 'twas who bade thee dig under thy palace down to the souterrain wherein thou sawest the crocks of gold and the figures of fine gems. I also well know wherefore thou art come hither and I am he who caused thee to come and I will give thee what thou seekest, for all that I would not give it to thy sire. But 'tis on condition that thou return unto me bringing a damsel whose age is fifteen, a maiden without rival or likeness in loveliness; furthermore she must be a pure virgin and a clean maid who hath never lusted for male nor hath ever been solicited of man;[FN#42] and lastly, thou must keep faith with me in safeguarding the girl whenas thou returnest hither and beware lest thou play the traitor with her whilst thou bringest her to me." To this purport the Prince sware a mighty strong oath adding, "O my lord, thou hast indeed honoured me by requiring of me such service, but truly 'twill be right hard for me to find a fair one like unto this; and, grant that I find one perfectly beautiful and young in years after the requirement of thy Highness, how shall I weet if she ever longed for mating with man or that male ever lusted for her?" Replied the King, "Right thou art, O Zayn al-Asnam, and verily this be a knowledge whereunto the sons of men may on no wise attain. However, I will give thee a mirror[FN#43] of my own whose virtue is this. When thou shalt sight a young lady whose beauty and loveliness please thee, do thou open the glass,[FN#44] and, if thou see therein her image clear and undimmed, do thou learn forthright that she is a clean maid without aught of defect or default and endowed with every praiseworthy quality. But if, contrariwise, the figure be found darkened or clothed in uncleanness, do thou straightway know that damsel is sullied by soil of sex. Shouldst thou find her pure and gifted with all manner good gifts, bring her to me but beware not to offend with her and do villainy, and if thou keep not faith and promise with me bear in mind that thou shalt lose thy life." Hereupon the Prince made a stable and solemn pact with the King, a covenant of the sons of the Sultans which may never be violated.--And Shahrazad was surprised by the dawn of day and ceased to say her permitted say. When it was the Five Hundred and Sixth Night,