The best days for cupping (hijama) are the 17th, 19thand 21st of the Islamic, lunar month which coincide with Monday, Tuesday or Thursday.
Anas ibn Maalik radiyAllahu’anhu reported that the Prophet sallAllaahu’alaiwasallam said,“Whoever wants to perform cupping (hijama) then let him search for the 17th, 19thand 21st…”
[Saheeh Sunan ibn Maajah (3486)].
Ibn Umar radiyAllahu’anhu reported that the Prophet sallAllaahu’alaiwasallam said,“Cupping (hijama) on an empty stomach* is best. In it is a cure and a blessing. It improves the intellect and the memory. So cup yourselves with the blessing of Allah on Thursday. Keep away from cupping (hijama) on Wednesday, Friday, Saturday and Sunday to be safe. Perform cupping (hijama) on Monday and Tuesday for it is the day that Allah saved Ayoub from a trial. He was inflicted with the trial on Wednesday. You will not find leprosy except (by being cupped) on Wednesday or Wednesday night.”
[Saheeh Sunan ibn Maajah (3487)].
Ibn Umar radiyAllahu’anhu reported that the Prophet sallAllaahu’alaiwasallam said,“Cupping (hijama) on an empty stomach* is best. It increases the intellect and improves the memory. It improves the memory of the one memorising. So whoever is going to be cupped then (let it be) on a Thursday in the name of Allah. Keep away from being cupped on a Friday, Saturday and Sunday. Be cupped on a Monday or Tuesday. Do not be cupped on a Wednesday because it is the day that Ayoub was befallen with a trial. You will not find leprosy except (by being cupped) on Wednesday or Wednesday night.”
[Saheeh Sunan ibn Maajah (3488)].
* ‘alaa ar-reeq in arabic means to fast until after being treated with cupping. Once the treatment of cupping has been completed, one may eat and drink.
As for the Islamic day and night, the night enters before the day. So at sunset on Tuesday, Wednesday night comes in. Cupping (hijama) is best performed during the daytime between the adhaan of fajr and the adhaan of maghrib because yawm in arabic means daytime.
The Sunnah days for cupping (hijama) every month are when the 17th, 19th or 21st of the Islamic, lunar month coincide with a Monday, Tuesday or Thursday. These are the best and most beneficial days for cupping (hijama). If one is not able to be cupped on the 17th, 19th or 21st (coinciding with Monday, Tuesday or Thursday) then any Monday, Tuesday or Thursday of the month. The most beneficial days for cupping (hijama) after the Sunnah days are the closest Monday, Tuesday or Thursday to the 17th, 19th or 21st of the Islamic, lunar month and Allah knows best.