Arabic (ربا النسيئة) for a type of riba that exists in, or results from, a sale transaction (ba’i or bay‘) which unduly benefits one the counterparties in the form of a surplus or extra amount due to delay of delivery of his side of the transaction. More specifically, riba al-nasi’ah arises in loan transactions (on the basis of future repayment of more than the principal) as well as sale transactions (on the basis of deferred price). An example of loan-based riba al-nasi’ah would be a loan with $1,000 principal on which $1,200 is to be paid next year. An example of sale-based riba al-nasi’ah is a sale of 100 kg of dates to be paid back with 120 kg six month later.
This type or riba is clearly forbidden in Qur’an. It existed in the pre-Islamic era in the Arabian peninsula, and thus was known as riba al-jahiliyah (riba of the era of ignorance).
