al-Bukhārī included two hadiths from him as supporting narrations, so I hope that the hadith is sound, especially since it has been narrated from Anas through another route with the wording: “When the heat becomes intense, seek relief through cupping, lest the blood of one of you surge and kill him.” Al-Ḥākim declared it authentic, and al-Dhahabī agreed with him; but its chain contains a liar and others besides him. For this reason, I included it in the other book as no. (2331).
I also found a corroborating report from Ibn ʿAbbās, attributed to the Prophet, with the wording: “Seek relief through cupping during intense heat, for the blood may surge in a person and kill him.” But it contains another liar, and I therefore documented it there as well, under no. (2363). The hadiths encouraging cupping are numerous; the documentation of some of them has already preceded in this book. See, for example, nos. (622 and 1847). I only included this one because of its latter portion.
I have found for it a third route from Anas, attributed to the Prophet, with the wording: “Whoever wishes to undergo cupping should select the seventeenth ... and let not the blood surge in any of you and kill him.” However, its chain is very weak, as I explained there under no. (1864). Yet it has an acceptable corroborating report, which I documented there under no. (1863). Thus, on its basis, the hadith is authentic, if Allah Most High wills.
Note: This hadith was omitted by al-Suyūṭī in al-Jāmiʿ al-Kabīr and elsewhere.
Tabayyuġ: Al-Qāmūs al-Muḥīṭ states: “Baygh is the surging of the blood; and tabayyuġ of the blood means that it becomes agitated and overwhelming.” Al-Hādī ilā Lughāt al-ʿArab states: “The blood baghā: it rose and became agitated, as occurs in a person suffering from high blood pressure.”