What is the ruling regarding the fluid that a woman discharges when caressing and conversing with her husband, and its continued discharge even during prayer, which compels her to repeat ablution and prayer, and sometimes causes her to miss the prayer time because of it, along with the persistence of exciting thoughts during prayer?

The aforementioned fluid (madhi) invalidates ablution (wudu) and nullifies prayer (salat). It is disliked to converse with one's spouse in a way that arouses lust and causes madhi to be discharged or to flow continuously, especially if this will lead to the prayer time expiring or to performing prayer with tayammum (dry ablution) when water is available. Kissing or intercourse are disliked if water is not available.