In Fariduddin Attar's 'The Conference of the Birds', the tale of the disciple who asks his Sheikh to speak a subtle point illustrates the necessity of spiritual preparedness for receiving profound wisdom. The Sheikh refuses to impart deep teachings to an impure disciple, comparing it to placing the scent of musk in impurity or speaking subtle words to someone who is drunk. This allegory conveys the Sufi principle that spiritual purification and inner readiness are fundamental prerequisites; deep spiritual truths cannot be understood or absorbed by a mind and heart that remain obscured by worldly impurities.