Tracts on listening to music : being D̲h̲amm al-malāhī, by Ibn abī 'l-Dunyā, and Bawāriq al-ilmāʻ, by Majd al-Dīn al-Tūsī al-Ghazālī - Ibn Abī al-Dunyā, ʿAbd Allāh ibn Muḥammad, 823-894, (Oriental translation fund. New series ;, 1938)