“Ibn ‘Umar said: ‘O Nafi’! The blood is boiling in me. Bring me a cupper and let him be a young man, not an old man or a boy.’ Ibn ‘Umar said: ‘I heard the Messenger of Allah ﷺ say: “Cupping on an empty stomach is better, and it increases one’s intellect and memory. And it increases the memory of one who has a good memory so whoever wants to be cupped, (let him do it) on a Thursday, in the Name of Allah. Avoid cupping on Fridays, Saturdays and Sundays. Have yourselves cupped on Mondays and Tuesdays, and avoid cupping on Wednesdays, for that is the day on which the calamity befell Ayyub, and leprosy and leucoderma only appear on Wednesday or the night of Wednesday.” (Using translation from Ibn Mājah 3488)

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ «الْحِجَامَةُ عَلَى الرِّيقِ أَمْثَلُ وَفِيهَا شِفَاءٌ وَبَرَكَةٌ وَهِيَ تَزِيدُ فِي الْعَقْلِ وَتَزِيدُ فِي الْحِفْظِ وَتَزِيدُ الْحَافِظَ حِفْظًا فَمَنْ كَانَ مُحْتَجِمًا عَلَى اسْمِ اللَّهِ فَلْيَحْتَجِمْ يَوْمَ الْخَمِيسِ وَاجْتَنِبُوا الْحِجَامَةَ يَوْمَ الْجُمُعَةِ وَيَوْمَ السَّبْتِ وَيَوْمَ الْأَحَدِ وَاحْتَجِمُوا يَوْمَ الِاثْنَيْنِ وَيَوْمَ الثُّلَاثَاءِ فَإِنَّهُ الْيَوْمُ الَّذِي صَرَفَ اللَّهُ عَنْ أَيُّوبَ فِيهِ الْبَلَاءَ وَاجْتَنِبُوا الْحِجَامَةَ يَوْمَ الْأَرْبِعَاءِ فَإِنَّهُ الَّذِي ابْتَلَى اللَّهُ أَيُّوبَ فِيهِ بِالْبَلَاءِ وَمَا يَبْدُو جُذَامٌ وَلَا بَرَصٌ إِلَّا فِي يَوْمِ الْأَرْبِعَاءِ أَوْ فِي لَيْلَةِ الْأَرْبِعَاءِ»