It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that he said: "The Messenger of Allah (peace and blessings be upon him) used to have cupping (hijamah) done when seventeen, nineteen and twenty-one days of the (lunar) month had passed."
No one narrated this hadith from al-Sari bin Yahya (may Allah have mercy on him) except Maslamah bin Ali (may Allah have mercy on him), whose narration al-Hakam bin Musa (may Allah have mercy on him) is alone in transmitting; and no one narrated it from Muhammad bin Sirin (may Allah have mercy on him) except al-Sari bin Yahya (may Allah have mercy on him).
Hadith Referenceالمعجم الأوسط / باب العين / 4453
Hadith Takhrij«أخرجه الحاكم فى «المستدرك» برقم: 7570، وأبو داود فى «سننه» برقم: 3861، والبيهقي فى «السنن الكبرى» برقم: 19592، والطبراني فى «الصغير» برقم: 236، والطبراني فى «الأوسط» برقم: 676، 6622»