This paper examined the prohibitions on financial
transactions as outlined in the of Ibn Abi Zaid alQairawani, a significant Maliki jurist, and examined their
relevance to contemporary financial practices. Islamic
jurisprudence, which is deeply rooted in fairness and
justice, prohibited certain transactions like (interest),
 (excessive uncertainty), and (deception) for
being exploitative and unjust. The Al-isala, written in the
10th century, provided a framework for ethical commercial
dealings by consolidating these prohibitions. The aim of
this research is to address exploitative practices in modern
financial systems—such as interest-based loans,
speculative trading, and deceptive contracts—that
conflicted with the ethical standards set by Islamic law.
These practices were found to parallel the prohibited
transactions described by Ibn Abi Zaid and continue to
present challenges for financial equity and transparency
today. The paper found that the principles articulated by
Ibn Abi Zaid remained highly relevant to modern financial
transactions, particularly those involving speculation and
interest. Islamic finance, with its prohibition of exploitative
practices, was found to offer viable alternatives through
interest-free banking, profit-sharing, and asset-backed , transactions. The research recommended the promotion of
Islamic financial products, the development of legal
frameworks integrating Islamic principles, and efforts to
raise public awareness about ethical finance alternatives. It
was suggested that by adopting these recommendations,
modern financial systems could move towards greater
fairness, transparency, and equity.