Arabic (Original)
وَأَخْبَرَنَا أَبُو بَكْرِ بْنُ فُورَكٍ أنبأ عَبْدُ اللهِ بْنُ جَعْفَرٍ ثنا يُونُسُ بْنُ حَبِيبٍ ثنا أَبُو دَاوُدَ الطَّيَالِسِيُّ ثنا عَبَّادُ بْنُ مَنْصُورٍ عَنْ عِكْرِمَةَ عَنِ ابْنِ عَبَّاسٍ ؓ أَنَّ رَسُولَ اللهِ ﷺ قَالَ خَيْرُ مَا تَحْتَجِمُونَ فِيهِ سَبْعَ عَشْرَةَ وَتِسْعَ عَشْرَةَ وَإِحْدَى وَعِشْرِينَ وَرَوَاهُ أَيْضًا الزُّهْرِيُّ عَنِ النَّبِيِّ ﷺ مُرْسَلًا
English Translation
And Abu Bakr ibn Furak informed us, Abdullah ibn Ja'far narrated to us, Yunus ibn Habib narrated to us, Abu Dawud al-Tayalisi narrated to us, Abbad ibn Mansur narrated to us from Ikrimah, from Ibn Abbas (may Allah be pleased with him) that the Messenger of Allah (peace be upon him) said: "The best days for you to get cupped are the seventeenth, nineteenth, and twenty-first." Al-Zuhri also narrated it from the Prophet (peace be upon him) as a mursal report.