عَنْ هِلَالِ بْنِ يَسَافَ رَضِيَ اللَّهُ عَنْهُ عَنْ ذَكْوَانَ عَنْ رَجُلٍ مِنَ الْأَنْصَارِ قَالَ عَادَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ رَجُلًا بِهِ جَرْحٌ فَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ ادْعُوا لَهُ طَبِيبَ بَنِي فُلَانٍ قَالَ فَدَعَوْهُ فَجَاءَ فَقَالَ يَا رَسُولَ اللَّهِ وَيُغْنِي الدَّوَاءُ شَيْئًا فَقَالَ سُبْحَانَ اللَّهِ وَهَلْ أَنْزَلَ اللَّهُ مِنْ دَاءٍ فِي الْأَرْضِ إِلَّا جَعَلَ لَهُ شِفَاءً
It is narrated from a Companion that the Noble Prophet, peace and blessings be upon him, visited an Ansari man who was wounded. The Messenger of Allah, peace and blessings be upon him, said: "Call the physician of such-and-such tribe." The people called him and he came. He said: "O Messenger of Allah! O Messenger of Allah! Does medicine benefit?" The Prophet, peace and blessings be upon him, said: "Glory be to Allah! For every disease that exists on the earth, Allah Almighty has also created its cure."