Purpose - To explore the outer reaches of buying, selling, property rights in an Islamic context. Design/methodology/approach - Philosophical, applying legal analysis, critique to the work of Richard Epstein. Findings - That there are no exceptions to the general rule that, under full free enterprise, anything must be allowed to be purchased, sold or given away. Research limitations/implications - To attain a system of laissez-faire capitalism, the law should be changed so as to recognize voluntary slave contracts. Practical implications - There would be very few or none in an advanced wealthy society. However, there might be some in the underdeveloped world. Originality/value - It advances one's knowledge of the marketplace, law and contracts.