What causes the questioner to feel that the glans of the penis is sticking to the underwear during Ramadan, accompanied by the appearance of a discharge, which he does not know whether it is urine or prostatic fluid, and how can this situation be dealt with?

The emission of anything from the male organ invalidates ablution (wudu'), but there must be certainty of its emission. Ablution is not invalidated merely by doubt, because the default is the validity of ablution and the purity of the area. To eliminate obsessive doubts (waswasah), it is recommended to sprinkle some water on the clothes after relieving oneself. If you are certain that something was emitted from the male organ, but you do not know when it was emitted, and it is possible that it occurred during or after the prayer, then the prayer is valid; because the impurity (hadath) is attributed to the nearest possible time.