Anas ibn Malli radiyAllau'anhu reported that the Prophet (pbuh) said "Indeed the best of remedies you have is cupping (hijama)..."
[Sahee al Bukhari (5371)]

Abu Hurairah radiyAllau'anhu reported that the Prophet (pbuh) said "If there is something excellent to be used as a remedy then it is cupping (hijama)."
[Sahee Sunan abi Dawud (3857), Sahee Sunan ibn Maajah (3476)]

Abdullah ibn Abbas'anhu reported that the Prophet (pbuh) said "I did not pass by an angel from the angels on the night journey except that they all said to me: Upon you is cupping (hijama), O Muhammad."
[Sahee Sunan ibj Maajah (3477)]

In the narration reported by Abdullah ibn Mas'ud radiyAllahu'anhu the angels said "Oh Muhammad, order your Ummah (nation) with cupping (hijama)"
[Sahee Sunan Tirmidhee (3479)]