What is required of one who swore on the Qur'an to abandon masturbation, then broke his oath?

First, you must repent from the forbidden act of masturbation. You also owe an expiation for breaking an oath. If you intended to emphasize your resolve with your oath, then you owe one expiation. If you intended to create another oath or had no specific intention, then there are two opinions among scholars: one is that it is a single expiation, and the other is that it is two expiations. If you break the oath, it is dissolved, and the expiation does not repeat if you engage in the act afterward. We also draw your attention to the repetition of your question about the same topic, which falls under the prohibited act of excessive questioning.