The Ruling on the Hadith: The Prophet (peace and blessings be upon him) granted a concession regarding kissing to an old man and prohibited it for a young man

Question:
It is narrated that the Prophet (peace and blessings be upon him) granted a concession regarding kissing to an old man and prohibited it for a young man. Is this hadith authentic?

Answer:
This concerns fasting, specifically the fasting of Ramadan. The Prophet (peace and blessings be upon him) said: . A person who is fasting may kiss his wife and may touch her while fasting, provided he is safe from committing fornication, provided his desire is not intense, and provided it does not harm him; in that case, there is no blame on him.
As for the one whose desire is intense, such that if he kisses, he may ejaculate, or he fears that he may have intercourse, he should avoid that. It is narrated that he (peace and blessings be upon him) granted a concession to one person regarding kissing and prohibited it for another. When this was looked into, it was found that the one granted the concession was an old man, and the one prohibited from it was a young man. This hadith, if authentic, is weak in its chain; it was narrated by Abu Dawud, and there is weakness in its chain. However, if it were authentic, its explanation would be that an old man is generally weaker in desire, while a young man has more desire and is stronger; therefore, he was prohibited from touching her because of the strength of his desire.
But the hadith is authentic, and the authentic hadiths indicate its permissibility for everyone. The authentic hadiths indicate the permissibility of touching a woman and kissing her while fasting, for both the young man and the old man, except for the one whose desire is strong and who fears the evil of fornication; he should leave that, even if he is an old man. Some old men have a stronger desire than young men.