Sale or purchase of gifts before they had been accepted. The Prophet (peace be upon him) prohibited this type of sale.
Al-’athari
Commingled Mudarabah
Khiyar al-shart
Participatory Istisna
Benevolent Bonds
Sahib al-kharaj
Al-‘ariyah al-madmunah
Orfi hukuk
Al-daniq
Shirkah al-mafalis