According to search-discovered classical Islamic scholarship, fraud, encapsulated by the Quranic term 'Bakhs' (diminishing the due of others), is a major sin and a form of societal corruption. The command in Quran 7:85, delivered by Prophet Shu'ayb to the people of Madyan, 'do not deprive people of their due,' serves as a foundational principle for Islamic business ethics. Tafsir masters like Ibn Kathir and Al-Qurtubi explain that this prohibition extends beyond literal weights and measures to include any transaction where one party is unjustly deprived of their rights, goods, or services. This concept is further elaborated in Surah Al-Mutaffifin as 'Tatfif', which warns of severe punishment for those who demand their full due but give less to others. This comprehensive prohibition on fraud underscores the Islamic emphasis on justice ('Adl), honesty (Sidq), and integrity in all economic and social dealings, linking fair trade directly to true faith.