Silsilat al-Ahadith al-Sahihah

Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates that the Noble Prophet (peace and blessings be upon him) said: "The best days on which you should get cupping done are the seventeenth, nineteenth, and twenty-first (of the lunar month). On the night of Mi'raj, whichever group of angels I passed by, they all said: O Muhammad! Make sure to get cupping done."