The research "The Fundamental Causes of Prohibited Financial Transactions" by Khalid bin Abdulaziz Al-Sulaiman presents a foundational study aimed at identifying the causes that lead to the prohibition of financial transactions in Islamic law, emphasizing that the default position in transactions is permissibility, provided they are free from invalidity and injustice. The research reviews fundamental causes such as usury, uncertainty, and injustice, relying on a descriptive methodology based on ...