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

Abud Darda’ reported God's messenger as saying, “God has sent down both the disease and the cure, and He has appointed a cure for every disease, so treat yourselves medically, but use nothing unlawful.” Abu Dawud transmitted it.