Sunan Abu Dawud
2371
Sahih+3

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

SahihAl-Albani
SahihMuhammad Muhyi Al-Din Abdul Hamid