What is the ruling on masturbating by imagining one's fiancée after the marriage contract, given that the consummation of the marriage is delayed, and knowing that he previously practiced it with the help of his fiancée? And is what he did with her permissible? What is the best solution to avoid masturbation in this situation?

If the legitimate marriage contract has been concluded between the spouses, then it is permissible for the wife to masturbate with her hand. However, it is forbidden for the husband to masturbate (masturbation). If it is not possible to complete the marriage, then fasting is the prophetic recommendation to curb lust, because it weakens and calms it. However, it is stipulated that the fasting must be frequent and abundant.