What is the ruling on a husband arousing his wife over the phone and what are the consequences of that, and is the wife considered sinful if her words were the cause of his arousal?

If semen is emitted from the husband merely due to arousal from conversation between the spouses, there is no sin. However, if he had a hand in it, such as masturbating with his hand, he is sinful. Since the شرعي (legally valid) marriage contract has been concluded, the wife is not sinful for arousing her husband. The custom or agreement regarding delaying the consummation should be observed, though it is preferable to hasten the completion of the marriage to achieve its benefits, such as chastity, protecting one's private parts, and procreation. It is advisable for spouses to avoid discussing matters of intimacy through communication channels due to the possibility of them being hacked and wiretapped.