Narrated Thawban: The Prophet ﷺ as saying: A man who cups and a man who gets himself cupped break their fast. Abu Dawud said: Ibn Thawban transmitted a similar tradition from his father on the authority of Makhul through an chain of narrators mentioned by him.
Related hadith on this topic
Explanation & Benefits
Shaykh Umar Farooq Saeedi
Benefits and Issues:
Imam Ahmad and Ishaq ibn Rahwayh have taken the apparent meaning of (Aftara al-Hajim wal-Mahjum) — that is, their fast is broken.
And some other scholars interpret this to mean that their fast has come close to being broken.
In other words, there is a sense of warning and dislike in it.
And Allah knows best. According to this second meaning, there is reconciliation between the narrations of this chapter and the narrations of the next chapter, in which its permissibility is mentioned.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 2371