عَنْ أُسَامَةَ بْنِ شَرِيكٍ قَالَ: قَالُوا: يَا رَسُول الله أفنتداوى؟ قَالَ: «نعم يَا عبد اللَّهِ تَدَاوَوْا فَإِنَّ اللَّهَ لَمْ يَضَعْ دَاءً إِلَّا وَضَعَ لَهُ شِفَاءً غَيْرَ دَاءٍ وَاحِدٍ الْهَرم» . رَوَاهُ أَحْمد وَالتِّرْمِذِيّ وَأَبُو دَاوُد

Anas said that God's messenger used to have himself cupped in the two veins at the sides of the neck and on the shoulder. Abu Dawud transmitted it, and Tirmidhi and Ibn Majah added that he used to have himself cupped on the 17th, 19th, and 21st.