Touching the private parts with desire and their erection

The questioner:
The Shaykh said that he interpreted the combining of the two hadiths regarding the erection of the penis due to desire, because desire is a general matter, and it is not a specific matter.

The Shaykh:
The hadith does not contain a detailed distinction, because it says, "Whoever touches his private parts, let him perform wudu," and it did not restrict this to desire. However, they reasoned that it is a place where desire is likely to occur, and a place of likelihood is treated as the reality itself, whether it is with desire or without desire. Yes. Also, it is not conceivable, or it is far-fetched to imagine, that a person touches his private parts with desire, desiring his private parts; rather, he desires himself. That is not correct.

The questioner:
Whoever has not been born with desire, and his erection occurs without desire, then his wudu is valid.

The Shaykh:
No, there is no evidence for this. The erection of the penis with desire does not invalidate it, because there is no evidence for it, and the default is that the wudu remains valid. Wudu is only invalidated by touching the private parts based on evidence. However, if it is possible that his penis erects and something comes out of it, and he feels something coming out of it, his wudu is invalidated. If he is certain, it is not the place of likelihood; if he is certain about what came out.