What is the ruling on a fasting person kissing his wife and seeing her naked if that arouses his desires?

A man is permitted to kiss his wife while he is fasting, as the Prophet, peace and blessings be upon him, used to do so. However, if he fears falling into the forbidden (such as if he is quick to arousal), then kissing is disliked for him. If he ejaculates, he must refrain from eating and make up the fast later, without expiation, according to the majority of scholars. As for prostatic fluid (madhy), it does not invalidate the fast, according to the more correct opinion. A Muslim must guard his gaze and all his other limbs from that which would invalidate his fast. Therefore, intentionally looking at one's wife in a way that incites lust and leads to ejaculation invalidates the fast, and requires refraining from eating and making up the fast later.