Presented to the Seminar‘ on Islamic Financial Techniques organised by I.I.I.E., Islamabad. Argues that the difference in cash price and credit price of a good is lawful. Holds that the above position is not covered by bai" ‘inah, bai‘ al—wafa', tawarruq, near-riba, muzabana, rebate for time and other hiyalf. Misses the essential point that riba is justified due to a positive time preference and if we accede to it, there would be no way that we can argue for prohibition of riba. A well documented paper. Based on primary sources. For jurists. Difficult for economists.