What is the ruling on very small drops exiting the tip of the penis after urinating, which the questioner presumes to be wady or residue from water used for istinja’? And what is the ruling on the slight moisture that appears on the opening of the penis? And is he required to repeat wudu’ if he touches his anus with a thin tissue to ensure no feces have exited?

"The obsessive whispering [waswas] has reached a great extent within you. The optimal treatment is to turn away from these whispers and not pay them any attention, nor to inspect the suspected excretions (urine, prostatic fluid/seminal fluid, feces). Touching the anus through a barrier does not nullify ablution, and ablution and purification (istinja') should not be repeated unless there is absolute certainty of excretion. If the mentioned 'gleam' (spot) is likely not impure, then purification and ablution are not obligatory because of it."