Hadith 32

And from him-asws: ‘A group of the Helpers said to him-saww: ‘O Rasool-Allah-saww! There is a neighbour of ours complaining of his belly. Will you-saww allow us to give him cure him? ’
He-saww said: ‘What will you cure him with? ’ They said, ‘There is a Jew over here treating this illness’. He-saww said: ‘With what? ’ They said, ‘By slitting the belly and taking something out from it’. Rasool-Allah-saww disliked that. They reiterated to him-saww twice or thrice. He-saww said: ‘Do whatever you like! ’ They called the Jew. He slit his belly and remove a lot of stuff, then washed his belly, then sewed him and cured him. He became healthy, and the Prophet-saww was informed. He-saww said: ‘The One-azwj Who Created the illnesses has Made a cure for it, and the best of the cures is the cupping, and ‘Al-Fisad’ (removing bad blood by cutting a vein), and the black seed, meaning ‘Al Showneyz’’. [38]