It is narrated from Sayyidah Salma (may Allah be pleased with her); she said: I never heard anyone complain to the Messenger of Allah (peace and blessings be upon him) of a pain in his head except that he (peace and blessings be upon him) told him: "Get cupping done (hijamah)," nor did anyone complain of pain in his feet except that he told him: "Dye them with henna (apply henna to them)." This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it; however, Imam Bukhari (may Allah have mercy on him) used Abd al-Rahman bin Abi al-Mawal as evidence.