Sale of non-available goods. This type of contract is not valid in the Islamic commercial law.
Bai al-wafa'
Bai al-talj'iah
Bai‘ al-’asnam
Bai bil-wafa
Bai al-sinin
Bai‘ al-mubadalah
Bai al-wad iyah
Bai‘ al-juzaf
Bay` bi-thaman ajil
Diwan al-kharaj