Ruling on raising the price of a product in order to extend the warranty
Question

                What is the ruling on raising the price of a product in order to extend the warranty?
Praise be to Allah.We put this question to Shaykh ‘Abd-Allaah ibn
    Jibreen, may Allaah preserve him, who replied as follows:
There is nothing wrong with it if it is done with the agreement of both
    parties… but selling separate warranty certificates is not permitted. And Allaah
    knows best.